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【327921】2024年黑龙江省齐齐哈尔市中考数学试题

时间:2025-01-20 20:42:04 作者: 字数:18323字
简介:

绝密★启用前

200685-2024年黑龙江省齐齐哈尔市中考数学试题


学校:___________姓名:___________班级:___________考号:___________


题号

总分

得分






注意事项:

1.答题前填写好自己的姓名、班级、考号等信息

2.请将答案正确填写在答题卡上


一、单选题

1.实数  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的相反数是(      )

A5

B  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

C  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

D  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

2.下列美术字中,既是轴对称图形又是中心对称图形的是(      )

A <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>     B <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>     C <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>     D <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

3.下列计算正确的是(      )

A  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> B  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

C  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> D  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

4.将一个含  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 角的三角尺和直尺如图放置,若  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,则  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的度数是(      )

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

A  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> B  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> C  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> D  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

5.如图,若几何体是由5个棱长为1的小正方体组合而成的,则该几何体左视图与俯视图的面积和是(      )

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

A. 6B. 7C. 8D. 9

6.如果关于  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的分式方程  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的解是负数,那么实数  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的取值范围是(      )

A  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>     B  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>     C  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>     D  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

7.六月份,在“阳光大课间”活动中,某校设计了“篮球、足球、排球、羽毛球”四种球类运动项目,且每名学生在一个大课间只能选择参加一种运动项目,则甲、乙两名学生在一个大课间参加同种球类运动项目的概率是(      )

A  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>     B  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>     C  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>     D  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

8.校团委开展以“我爱读书”为主题的演讲比赛活动,为奖励表现突出的学生,计划拿出200元钱全部用于购买单价分别为8元和10元的两种笔记本(两种都要购买)作为奖品,则购买方案有(      )

A5种    B4种    C3种    D2

9.如图,在等腰  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 中,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,动点EF同时从点A出发,分别沿射线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 和射线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的方向匀速运动,且速度大小相同,当点E停止运动时,点F也随之停止运动,连接  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,以  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 为边向下做正方形  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,设点E运动的路程为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,正方形  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 和等腰  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 重合部分的面积为下列图像能反映yx之间函数关系的是(      )

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

A <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>     B <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>     C <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>     D <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

10.如图,二次函数  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的图象与  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 轴交于  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,其中  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> .结合图象给出下列结论:

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>   

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 时,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的增大而减小;

关于  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的一元二次方程  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的另一个根是  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的取值范围为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> .其中正确结论的个数是(      )

A  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>     B  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>     C  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>     D  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

二、填空题

11.共青团中央发布数据显示:截至202312月底,全国共有共青团员  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 万名.将  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 万用科学记数法表示为      

12.如图,在平面直角坐标系中,以点O为圆心,适当长为半径画弧,交x轴正半轴于点M,交y轴正半轴于点N,再分别以点MN为圆心,大于  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的长为半径画弧,两弧在第一象限交于点H,画射线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,若  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,则  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>       

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

13.在函数  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 中,自变量  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的取值范围是               

14.若圆锥的底面半径是1cm,它的侧面展开图的圆心角是直角,则该圆锥的高为      cm

15.如图,反比例函数  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的图象经过平行四边形  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的顶点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 轴上,若点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,则实数  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的值为      

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

16.已知矩形纸片  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 在边  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 上,连接  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,将  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 沿  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 所在的直线折叠,点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的对应点为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,把纸片展平,连接  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,当  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 为直角三角形时,线段  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的长为              

17.如图,数学活动小组在用几何画板绘制几何图形时,发现了如“花朵”形的美丽图案,他们将等腰三角形  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 置于平面直角坐标系中,点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的坐标为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的坐标为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 在第一象限,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> .将  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 沿  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 轴正方向作无滑动滚动,使它的三边依次与  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 轴重合,第一次滚动后,点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的对应点为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的对应点为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的交点为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,称点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 为第一个“花朵”的花心,点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 为第二个“花朵”的花心;……;按此规律,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 滚动2024次后停止滚动,则最后一个“花朵”的花心的坐标为                

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

三、解答题

18(1)计算: π <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

(2)分解因式:  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

19.解方程:  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

20.为提高学生的环保意识,某校举行了“爱护环境,人人有责”环保知识竞赛,对收集到的数据进行了整理、描述和分析.

【收集数据】随机抽取部分学生的竞赛成绩组成一个样本.

【整理数据】将学生竞赛成绩的样本数据分成 ,,, <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 四组进行整理.

(满分  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 分,所有竞赛成绩均不低于  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> )如下表:

组别

A

B

C

D

成绩(  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> /)

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

人数()

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

【描述数据】根据竞赛成绩绘制了如下两幅不完整的统计图.

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

【分析数据】根据以上信息,解答下列问题:

(1)填空:  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>         <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>       

(2)请补全条形统计图;

(3)扇形统计图中,C组对应的圆心角的度数是        <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

(4)若竞赛成绩  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 分以上(  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> )为优秀,请你估计该校参加竞赛的  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 名学生中成绩为优秀的人数.

21.如图,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 内接于  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的直径,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 于点D,将  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 沿  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 所在的直线翻折,得到  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,点D的对应点为E,延长  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的延长线于点F

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

(1)求证:  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的切线;

(2)  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,求图中阴影部分的面积.

22.领航无人机表演团队进行无人机表演训练,甲无人机以  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> /秒的速度从地面起飞,乙无人机从距离地面20米高的楼顶起飞,甲、乙两架无人机同时匀速上升,6秒时甲无人机到达训练计划指定的高度停止上升开始表演,完成表演动作后,按原速继续飞行上升,当甲、乙无人机按照训练计划准时到达距离地面的高度为96米时,进行了时长为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 秒的联合表演,表演完成后以相同的速度大小同时返回地面.甲、乙两架无人机所在的位置距离地面的高度y()与无人机飞行的时间x()之间的函数关系如图所示.请结合图象解答下列问题:

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

(1)  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>       /秒,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>       秒;

(2)求线段  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 所在直线的函数解析式;

(3)两架无人机表演训练到多少秒时,它们距离地面的高度差为12米?(直接写出答案即可)

23.综合与实践:如图1,这个图案是3世纪我国汉代的赵爽在注解《周髀算经》时给出的,人们称它为“赵爽弦图”,受这幅图的启发,数学兴趣小组建立了“一线三直角模型”.如图2,在  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 中,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,将线段  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 绕点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 顺时针旋转  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 得到线段  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,作  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的延长线于点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>   

(1)【观察感知】如图2,通过观察,线段  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的数量关系是      

(2)【问题解决】如图3,连接  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 并延长交  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的延长线于点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,若  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,求  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的面积;

(3)【类比迁移】在(2)的条件下,连接  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 于点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,则  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>       

(4)【拓展延伸】在(2)的条件下,在直线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 上找点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,使  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,请直接写出线段  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的长度.

24.综合与探究:如图,在平面直角坐标系中,已知直线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 轴交于点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,与  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 轴交于点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,过  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 两点的抛物线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 轴的另一个交点为点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 是抛物线位于第四象限图象上的动点,过点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 分别作  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 轴和  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 轴的平行线,分别交直线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 于点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

(1)求抛物线的解析式;

(2)  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 轴上的任意一点,若  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 是以  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 为腰的等腰三角形,请直接写出点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的坐标;

(3)  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 时,求点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的坐标;

(4)在(3)的条件下,若点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 轴上的一个动点,过点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 作抛物线对称轴的垂线,垂足为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,连接  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,则  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的最小值为      

参考答案

一、单选题

1. A

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的相反数是5

故此答案A


2. D

解:选项  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 轴对形,不是中心形,故  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 不符合意;

选项  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 轴对形,不是中心形,故  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 不符合意;

选项  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 轴对形,不是中心形,故  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 不符合意;

选项  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 轴对形,也是中心形,故  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 符合.

故此答案  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> .


3. D

解:A  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,故该选项不符合意;

B  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,故该选项不符合意;

C  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,故该选项不符合意;

D  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,故该选项符合意;

故此答案D


4. B

解:如所示,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

意得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,故此答案B


5. B

视图的底是两个正方形,上是一个正方形,故左视图的面积为3;俯视图的底是一个正方形,上是三个正方形,故俯视图的面积为4,所以几何体左视图与俯视图的面和是7.故B


6. A

解:方程两  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,解得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

分式方程的解是数,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,故此答案  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>


7. C

解:分ABCD表示球、足球、排球、羽毛球,

如下:

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

可知,共有  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 种等可能情况,其中甲、乙两名学生在一个大课间参加同种球动项目的情况有  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 种,

即甲、乙两名学生在一个大课间参加同种球动项目的概率是  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

故此答案C


8. B

解:设单价分别为8元和10元的两种笔本分别为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 个,

意,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 正整数,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> .

购买方案有4种,

故此答案B


9. A

解:当  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 重合  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,由可得

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 中,由勾股定理可得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

开口向上的抛物线的一部分,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 下方  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,由可得

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

开口向下的抛物线的一部分,

上所述,A正确,

故此答案A


10. C

解:由可得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 错误

得,经过  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,将  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 代入  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 可得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 正确;

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 函数象与  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的另一个交点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,且  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 该图象中,当  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 随着  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的增大而减小,当  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 随着  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的增大而增大,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 随着  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的增大而减小,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 正确;

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 关于  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的一元二次方程  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的根  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 正确;

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,即  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,解得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 正确.

上,②③④⑤正确,共  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 个.

故此答案  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>


二、填空题

11.  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

解:  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> .


12. 2

解:根据作方法可得点H在第一象限角平分线,H相等且正数,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,解得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>


13.  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

解:由意可得,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,解得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>


14.  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

解:设圆锥的母线长为R,根据意得 ππ <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,解得,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

圆锥的母线长为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 圆锥的高  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>


15.  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 是平行四形,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 相同,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 在反比例函数象上,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 代入函数中,得到  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 标为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,解得,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>


16.  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 2

解:  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 矩形,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,如所示:

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 上,

根据折叠可知  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 中,根据勾股定理得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,即  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

解得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,即  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,如所示:

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

根据折叠可知:  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

上分析可知:  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 2


17.  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

解:  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

意得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,同理  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 滚动一次得到  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 滚动四次得到  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 滚动七次得到  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 滚动2024次后停止滚动  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>


三、解答题

18. () <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> () <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

1)解:原式  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

2)解:原式  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> .


19. =,= <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

解:  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

x﹣2)(x﹣3)=0

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 20  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 30

解得 =,= <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>


20. (1)  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> (2)补图见解析; (3)  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> (4)  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

1)解:抽取的学生人数  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 人,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

2)解:全条形统计图如下;

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

3)解:  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

4)解:  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

答:估计该校参加竞赛  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 名学生中成绩为优秀的人数大  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 人.


21. (1)见解析;(2) π <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

1明:  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 沿直线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 翻折得到  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的半径,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 于点C

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的半径,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的切线

2)解:  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

由(1)得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 中,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 扇形ππ <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

阴影扇形π <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>


22. (1)820(2)  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> (3)2秒或10秒或16

1)解:由意得甲无人机的速度  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> /秒,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

2)解:由象知,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

甲无人机的速度8/秒,

甲无人机匀速从0米到96米所用时间为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 秒,

甲无人机独表演所用时间为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 秒,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 秒,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

设线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 所在直线的函数解析式  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 代入得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,解得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 所在直线的函数解析式  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

3)解:由  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

同理线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 所在直线的函数解析式  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 所在直线的函数解析式  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 所在直线的函数解析式  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,由意得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,解得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> (舍去),

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,由意得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,解得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> (舍去),

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,由意得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,解得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> (舍去),

上,两架无人机表演训练2秒或10秒或16,它距离地面的高度差12米.


23. (1)  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> (2)10(3)  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> (4)  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

1)解:线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 顺时针  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 得到线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,作  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的延长线于点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>   

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

2)解:  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

3)解:如所示,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 于点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>   

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,即  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,即  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,解得,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

4)解:如所示,当  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 点的左侧时  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 于点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>   

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,解得,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 中,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

所示,当  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 点的右侧时  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的延长线于点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>   

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,解得,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> .

上所述,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>


24. (1)  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> (2)  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> (3)  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> (4)  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

1)解:线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 交于点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,与  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 交于点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,即  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ;当  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,即  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 抛物线的解析式  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 代入可得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,解得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

抛物线的解析式  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

2)解:  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

:当  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

:当  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

:当  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

上,点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的坐标为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

3)解:如  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,解得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 负值舍去),

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

4)解: 抛物线的解析式  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

抛物线轴为线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

:将线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 向右平移  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 位得到  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 是平行四形,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 关于  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> ,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a> 的最小值为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/973/" title="黑龙江省" class="c1" target="_blank">黑龙江省</a> <a href="/tags/1102/" title="黑龙江" class="c1" target="_blank">黑龙江</a>