题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223359-72612.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223359-63500.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223400-83329.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223400-29253.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223400-57210.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223400-16112.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223400-44199.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223400-16112.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223401-86387.png)
A.棱柱 | B.棱锥 |
C.棱台 | D.球 |
答案
解析
试题分析:先固定
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223401-12429.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223401-37928.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223402-29790.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223402-40522.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223402-82612.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223402-99420.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223403-73864.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223403-20470.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223401-37928.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223402-29790.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223402-99420.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223403-20470.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223403-20470.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223402-29790.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223403-20470.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223402-29790.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223403-20470.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223402-29790.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223401-12429.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223403-28549.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223402-99420.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223403-44216.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223403-44216.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223402-29790.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223403-44216.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223402-29790.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223403-44216.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223402-29790.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223403-44216.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223403-20470.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223403-20470.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223403-44216.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223400-16112.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223404-65677.jpg)
核心考点
试题【如图,正方体中,点为线段上一动点,点为底面内(含边界)一动点,为的中点,点构成的点集是一个空间几何体,则该几何体为( )A.棱柱B.棱锥C.棱台D.球】;主要考察你对空间几何体的结构特征等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223354-43714.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223354-40938.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223354-85508.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223354-40938.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223354-43714.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223339-52295.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223339-76751.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223339-24145.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223339-80604.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223340-12319.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223340-29956.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223326-74743.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223326-97701.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223327-55787.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223327-96320.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223327-33137.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223327-92035.png)
A.表面积![]() | B.表面积为![]() |
C.体积为![]() | D.体积为![]() |
①若一个球的半径缩小到原来的
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223316-20360.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223316-39668.png)
②若两组数据的平均数相等,则它们的标准差也相等;
③直线x+y+1=0与圆
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020223316-18344.png)
其中真命题的序号是( )
A.①②③ | B.①② | C.①③ | D.②③ |
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