题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050622-37949.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050622-69810.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050622-10110.png)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050622-56462.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050623-16114.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050623-61703.png)
核心考点
举一反三
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050615-21644.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050608-47503.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050608-15860.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050608-32963.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050609-98499.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050609-29123.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050609-88550.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050609-37759.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050610-87230.png)
(Ⅰ)求
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050610-54046.png)
(Ⅱ)当
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050608-47503.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050610-51801.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050610-40270.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050609-29123.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050609-88550.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050609-37759.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050601-67247.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050601-67633.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050601-39226.png)
(Ⅰ)当平面COD⊥平面AOB时,求
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050601-39226.png)
(Ⅱ)当
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050601-39226.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050601-67247.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050601-99399.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050602-20266.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050554-81372.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050554-21330.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020050554-81372.png)
A.2![]() | B.![]() | C.![]() | D.![]() |
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