题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013037-73907.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013037-78440.png)
①
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013037-26178.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013038-34652.png)
③
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013038-81332.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013038-59229.png)
其中,真命题是( )
A.①④ | B.②③ | C.①③ | D.②④ |
答案
解析
试题分析:对于①利用平面与平面平行的性质定理可证
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013038-64540.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013039-40118.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013038-64540.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013039-79525.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013039-40118.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013039-79525.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013039-52071.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013039-50202.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013040-85296.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013039-52071.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013040-85296.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013039-50202.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013040-46597.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013039-40118.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013039-40118.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013040-46597.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013040-84904.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013040-69973.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013040-46597.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013038-64540.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013032-27641.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013033-58615.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013033-59111.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013033-71144.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013033-59111.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013033-71144.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013032-27641.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013033-59111.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013032-27641.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013033-71144.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013032-27641.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013033-59111.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013032-27641.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013033-71144.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013033-59111.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013033-71144.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013032-27641.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013033-59111.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013032-27641.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013033-58615.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013033-58615.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013033-59111.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013032-27641.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013033-59111.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013033-44005.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013033-59111.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013033-71144.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013028-22363.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013029-37802.png)
①若
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013029-51010.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013029-67587.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013029-98278.png)
②若
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013029-51010.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013029-67587.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013029-67587.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013029-51010.png)
③若m⊥n,n⊥l则m∥l; ④若
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013029-79791.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013030-62563.png)
(1)求证:MN∥平面PAD;
(2)求证:MN⊥DC;
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013025-16637.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013016-69531.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013016-36769.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013017-86322.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013017-78473.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013017-12294.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013017-80979.png)
①
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013018-87142.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013018-25467.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013018-22513.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013017-86322.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013017-78473.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013018-22513.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013017-86322.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013018-34419.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013018-22513.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013019-88122.png)
其中正确的是 (将正确命题的序号全填上).
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013000-92899.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106013000-93626.jpg)
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