题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043026-65553.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043027-77375.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043027-93605.png)
(1)求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043027-79605.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043027-32009.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043027-45715.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043027-32009.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043027-61691.jpg)
答案
(2)证明见解析。
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043028-54257.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043028-73729.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043027-77375.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043028-41037.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043027-93605.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043028-28087.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043028-89121.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043028-48070.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043029-39653.png)
又
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043029-17743.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043027-32009.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043029-25035.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043027-32009.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043028-89121.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043028-48070.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043027-32009.png)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043028-73729.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043029-79436.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043030-84754.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043030-17837.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043030-84754.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043030-84583.png)
又
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043030-65183.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043031-82004.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043028-89121.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043031-69776.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043031-16270.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043030-17837.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043027-32009.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043028-89121.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043031-88799.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043031-16270.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043021-80586.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043021-48796.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043021-80586.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043021-48796.png)
①“直线a∥直线b”的充要条件是“a平行于b所在的平面”;
②“直线
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043018-14140.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043018-19352.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043018-14140.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043018-19352.gif)
③“直线a、b为异面直线”的充分不必要条件是“直线a、b不相交”;
④“平面
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043018-19352.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043018-57949.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043018-19352.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043018-57949.gif)
其中正确命题的序号是
A.①② | B.②③ | C.③④ | D.②④ |
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043013-89602.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043013-38399.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043013-78283.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043014-45010.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043014-31070.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043014-58379.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043013-89602.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043014-45010.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043013-38399.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043014-45010.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043013-89602.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043013-38399.gif)
②若
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043013-38399.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043014-41408.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043014-31070.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043013-78283.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043013-89602.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043014-31070.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043013-38399.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043013-89602.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043013-38399.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043013-78283.gif)
③若
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043013-38399.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043014-41408.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043014-45010.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043013-38399.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043013-78283.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043013-78283.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043014-45010.gif)
④若
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043014-45010.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043014-58379.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043014-31070.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043014-58379.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043014-45010.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043014-31070.gif)
A.①② B ①②③ C.①②③④ D.③④
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043007-12272.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043007-30786.gif)
A.若![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() | D.若![]() ![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043004-50943.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106043004-50943.gif)
A.![]() | B.![]() |
C.![]() | D.![]() |
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