题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032303-45095.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032304-16694.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032304-58242.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032304-48278.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032304-56615.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032305-16382.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032305-19636.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032305-16730.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既不充分也不必要条件 |
答案
解析
核心考点
试题【已知是不同的两个平面,直线,直线,条件与没有公共点,条件,则是的A.充分不必要条件B.必要不充分条件C.充要条件D.既不充分也不必要条件】;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/20191021/20191021032249-81213.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032249-10487.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032250-68263.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032250-90915.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032250-47606.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032250-57866.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032250-94989.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032250-70242.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032250-10793.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032249-10487.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032250-94080.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032251-12772.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032251-40535.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032251-96161.gif)
(Ⅰ)求二面角
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032251-79042.gif)
(Ⅱ)在线段
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032251-27516.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032251-44978.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032251-57930.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032251-26704.gif)
![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032238-91286.gif)
(1)求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032238-98049.gif)
(2)求四棱锥A—ECBB1的体积;
(3)判断直线CF和平面AEB1的位置关系,并加以证明。
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032239-78506.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032229-91038.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032229-15158.gif)
(Ⅰ)证明PA⊥平面ABCD;
(Ⅱ)求以AC为棱,EAC与DAC为面的二面角
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032229-93889.gif)
|
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032223-70539.gif)
如图,O,H分别为AE、AB中点.
(Ⅰ)求证:直线OH//面BDE;
(Ⅱ)求证:面ADE
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032223-63371.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032223-90266.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032210-12847.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032211-95217.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032211-64508.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032211-64508.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032211-42234.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032211-94598.gif)
(Ⅰ) 求证:PB⊥AC;
(Ⅱ) 求
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032211-64508.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032212-68695.gif)
(Ⅲ) 当
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032212-54535.gif)
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