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【328009】山东省德州市2021年中考数学试卷

时间:2025-01-20 20:59:01 作者: 字数:15565字
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绝密★启用前

202843-山东省德州市2021年中考数学试卷


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


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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  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 的相反数是(      )

A  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> B  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> C3D.−3

2.据国家统计局公布,我国第七次全国人口普查结果约为14.12亿人,14.12亿用科学记数法表示为(      )

A  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> B  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> C  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> D  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

3.下列运算正确的是(      )

A  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> B  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

C  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> D  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

4.如图所示的几何体,对其三视图叙述正确的是(      )

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

A.左视图和俯视图相同                                                 B.三个视图都不相同

C.主视图和左视图相同                                                  D.主视图和俯视图相同

5.八年级二班在一次体重测量中,小明体重54.5kg,低于全班半数学生的体重,分析得到结论所用的统计量是(      )

A.中位数                           B.众数                                C.平均数                           D.方差

6.下列选项中能使平行四边形ABCD成为菱形的是(      )

AABCD                         BABBC                          CBAD90°                  DACBD

7.为响应“绿色出行”的号召,小王上班由自驾车改为乘坐公交车,已知小王家距上班地点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,他乘公交车平均每小时行驶的路程比他自驾车平均每小时行驶的路程多  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,他从家出发到上班地点,乘公交车所用的时间是自驾车所用时间的  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,小王乘公交车上班平均每小时行驶(      )

A  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> B  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> C  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> D  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

8.如图,在矩形  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 中,  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,以点A为圆心,  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 长为半径画弧交  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 于点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,连接  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,则阴影部分的面积为(      )

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

A  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> B  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> C  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> D  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

9.已知点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 都在反比例函数  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> a是常数)的图象上,且  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,则  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 的大小关系为(      )

A  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> B  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> C  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> D  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

10.某商场准备改善原有楼梯的安全性能,把坡角由  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 减至  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> .已知原楼梯长为5米,则调整后的楼梯会加长  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 参考数据:  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> (      )

A. 6B. 3C. 2D. 1

11.将含有  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 的三角板  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 按如图所示放置,点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 在直线  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 上,其中  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,分别过点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 作直线  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 的平行线  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 到直线  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 的距离分别为  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,则  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 的值为(      )

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

A1B  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> C  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> D  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

12.小红同学在研究函数  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 的图象时,发现有如下结论:该函数有最小值;该函数图象与坐标轴无交点;  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 时,  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 的增大而增大;该函数图象关于  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 轴对称;直线  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 与该函数图象有两个交点,则上述结论中正确的个数为(      )

A2B3C4D5

二、填空题

13.方程x2﹣4x0的解为    

14.如图,点EFBC上,BECFAD.请添加一个条件              ,使ABF≌△DCE

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

15.如图所示的电路图中,当随机闭合  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 中的两个开关时,能够让灯泡发光的概率为     

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

16.在平面直角坐标系  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 中,以点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 为圆心,任意长为半径画弧,交  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 轴正半轴于点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,交  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 轴于点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,再分别以点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 为圆心,以大于  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 长为半径画弧,两弧在  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 轴右侧相交于点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,连接  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,若  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,则点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 的坐标为    

17.小亮从学校步行回家,图中的折线反映了小亮离家的距离S(米)与时间t(分钟)的函数关系,根据图象提供的信息,给出以下结论:他在前12分钟的平均速度是70/分钟;他在第19分钟到家;他在第15分钟离家的距离和第24分钟离家的距离相等;他在第33分钟离家的距离是720米.其中正确的序号为    

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

18.如图,在等边三角形  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 各边上分别截取  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 延长线于点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 延长线于点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 延长线于点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ;直线  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 两两相交得到  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,若  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,则  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>     

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

三、解答题

19.解答:

(1)计算:  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

(2)化简:  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

20.国家航天局消息:北京时间2021515日,我国首次火星着陆任务宣告成功,某中学科技兴趣小组为了解本校学生对航天科技的关注程度,在该校内进行了随机调查统计,将调查结果分为不关注、关注、比较关注、非常关注四类,回收、整理好全部调查问卷后,得到下列不完整的统计图:

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

1)此次调查中接受调查的人数为         人;

2)补全条形统计图;

3)扇形统计图中,“关注”对应扇形的圆心角为         

4)该校共有900人,根据调查结果估计该校“关注”,“比较关注”及“非常关注”航天科技的人数共多少人?

21.已知点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 为函数  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 图象上任意一点,连接  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 并延长至点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,使  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,过点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 轴交函数图象于点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,连接  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

(1)如图1,若点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 的坐标为  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,求点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 的坐标;

(2)如图2,过点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,垂足为  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,求四边形  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 的面积.

22.如图,点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 分别在正方形  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 的边  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 上,且  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 分别在边  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 上,且  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,垂足为  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

(1)求证:  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

(2)若正方形  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 边长为5  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,求  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 的长度.

23.某公司分别在  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 两城生产同种产品,共100件.  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 城生产产品的成本  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> (万元)与产品数量  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> (件  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 之间具有函数关系  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 城生产产品的每件成本为60万元.

(1)  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 城生产多少件产品时,  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 两城生产这批产品成本的和最小,最小值是多少?

(2)  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 城把该产品运往  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 两地的费用分别为1万元  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 件和3万元  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 件;从  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 城把该产品运往  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 两地的费用分别为1万元  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 件和2万元  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 件.  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 地需要90件,  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 地需要10件,在(1)的条件下,怎样调运可使  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 两城运费的和最小?

24.已知  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 的外接圆,  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

(1)如图1,延长  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 至点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,使  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,连接  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

求证:  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 为直角三角形;

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 的半径为4  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,求  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 的值;

(2)如图2,若  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 上的一点,且点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 位于  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 两侧,作  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 关于  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 对称的图形  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,连接  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,试猜想  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 三者之间的数量关系并给予证明.

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

25.小刚在用描点法画抛物线  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 时,列出了下面的表格:

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

0

1

2

3

4

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

3

6

7

6

3

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 

(1)请根据表格中的信息,写出抛物线  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 的一条性质:  

(2)求抛物线  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 的解析式;

(3)将抛物线  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 先向下平移3个单位长度,再向左平移4个单位长度,得到新的抛物线  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

若直线  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 与两抛物线  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 共有两个公共点,求  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 的取值范围;

抛物线  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 的顶点为A,与  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 轴交点为点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> (点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 在点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 左侧),点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> (不与点A重合)在第二象限内,且为  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 上任意一点,过点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 轴,垂足为  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,直线  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 轴于点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,连接  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,求证:  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

参考答案

一、单选题

1. A

解:  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 的相反数  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

故此答案A


2. C

解:14.12亿  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

C


3. D

解:A  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 错误,不符合意;

B  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 错误,不符合意;

C  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 错误,不符合意;

D  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 算正确,符合意.

D


4. C

解:几何体的三视图所示:

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

几何体的主视图和左视图相同.

C


5. A

解:八年二班在一次体重排列后,最中一个数或最中两个体重数的平均数是这组体重数的中位数,

半数学生的体重位于中位数或中位数以下,

小明低于全班半数学生的体重所用的统计量是中位数,

A


6. B

解:ABCD是平行四形,

A、当ABCD,不能判定平行四ABCD是菱形,故本选项不符合意;

B、当AB=BC,根据有一组邻边相等的平行四形是菱形,可得到平行四ABCD是菱形,故本选项符合意;

C、当BAD90°,平行四ABCD是矩形,故本选项不符合意;

D、当ACBD,平行四ABCD是矩形,故本选项不符合意;

B


7. C

解:小王用自驾车方式上班平均每小  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 乘公交平均每小  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

意得:  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

解得:  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

经检验  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 是原方程的解,

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

即小王乘公交上班平均每小  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

C


8. A

解:  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 是矩形,  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 阴影部分的面 矩形扇形 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>


9. D

解:  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

反比例函数  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> a是常数)的象在一、三象限,

所示:

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

D


10. D

,在  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 中,  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 米,  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> (米).  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 中,  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 米,则调整后的楼梯会加长约  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> (米).D.

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>


11. B

解:  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 于点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

三角形  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 等腰直角三角形,

RtABC中,  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 长为  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

B


12. B

解:列表:

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

1

2

3

4

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

5

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

4

5

5

4

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

5

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 

画出函数象如

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 

象:

函数有最小,符合意;

函数象与坐标轴无交点,符合意;

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 的增大而增大,不合意;

函数象关于  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 轴对称,符合意;

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,整理得  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

b2-4ac  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

两个方程均有两个不相等的数根,即共有四个根,且四个根互不相等.

线  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 函数象有四个交点,不符合意,

上,以上结论正确的有:①②④

B


二、填空题

13. x10x24

解:  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

故答案是:  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>


14. BC(答案不唯一)

解:BE=CF

BE+EF=CF+EF

BF=CE

添加B=C

ABFDCE中,

=== <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

∴△ABF≌△DCEAAS),

故答案B=C(答案不唯一).


15.  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

解:  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 1234表示,

得:

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 共有12种等可能的果,能够让灯泡光的有1213142131416果,

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 够让灯泡光的概率  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

故答案  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>


16.  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

解:如

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

由作知点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 在第一象限或第四象限角平分线上,

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 的坐标为  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

故答案  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>


17. ①④

解:由象知,前12分中的平均速度:(1800−960÷1270(米/分),

正确;

象知,小亮第19分中又返回学校,

错误

小亮在返回学校的速度:(1800−960÷19−12)=840÷7120(米/分),

15分离家距离:960+(15−12×1201320

21分到41分小亮的速度1800÷41−21)=1800÷2090(米/分),

24分离家距离:1800−24−21×901800−2701530(米),

1320≠1530

错误

小亮在33分离家距离:1800−33−21×901800−1080720(米),

正确,

故答案①④


18. 2

解:延  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 于点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 是等三角形,

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

同理可得:  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,交  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 于点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 中,  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,交  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 于点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 中,  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,交  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 于点  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 中,  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

解得:  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 负值舍去),

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 值为2

故答案2


三、解答题

19. (1)  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> (2)  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

20. 150;(2)见解析;(343.2°;(4)该校“关注”,“比较关注”及“非常关注”航天科技的人数共有828

解:(1)不关注、关注、比关注的共有4+6+2434(人),占调查人数的1﹣32%68%

此次调查中接受调查的人数34÷68%50(人),

故答案50

250×32%16(人),

统计图所示:

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

3360°  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 43.2°

故答案43.2°

4900  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 828(人),

答:估计该关注关注非常关注航天科技的人数共有828人.


21. (1)  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 的坐标为  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> (2)4

22. (1)答案见解析; (2)  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>

23. (1)A城生产20件,最小值是5700万元; (2)  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 城把该产品运往  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 地的产品数量为20件,则从  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 城把该产品运往  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 地的产品数量为0件;从  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 城把该产品运往  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 地的产品数量为70件,则从  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 城把该产品运往  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 地的产品数量为10件时,可使  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 两城运费的和最小.

24. (1)见解析;  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> (2)  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> ,理由见解析

25. (1)抛物线的顶点坐标为  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> (答案不唯一); (2)  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> (3)  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/561/" title="山东" class="c1" target="_blank">山东</a> <a href="/tags/994/" title="德州" class="c1" target="_blank">德州</a> <a href="/tags/995/" title="山东省" class="c1" target="_blank">山东省</a> 见解析.


《【328009】山东省德州市2021年中考数学试卷.doc》
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