在空间中,
表示平面,
表示两条直线,则下列命题中错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b7dd6c3d0ac1c628ef2e5239a176329.png)
A.若![]() ![]() ![]() ![]() |
B.若![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
20-21高二下·上海金山·期末 查看更多[2]
更新时间:2021-09-01 22:03:04
|
相似题推荐
单选题
|
较易
(0.85)
名校
【推荐1】已知
是三个不同的平面,
是两条不同的直线,下列命题为真命题的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61ba63ad02b1d5af2982fac3d91eb15c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
A.若![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() | D.若![]() ![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
名校
【推荐2】设
、
、
是空间三条不同的直线,
,
是空间两个不同的平面,则下列命题不成立 的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
A.当![]() ![]() ![]() |
B.当![]() ![]() ![]() ![]() ![]() ![]() |
C.当![]() ![]() ![]() |
D.当![]() ![]() ![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
解题方法
【推荐1】如图,在三棱锥
中,
,
,
分别是侧棱
,
,
的中点. 给出下列三个结论:①
平面
;②平面
平面
;③三棱锥
与三棱锥
的体积比为
.其中正确的个数是
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/20/7d3a6982-6d73-4595-bccd-f5b2188c9642.png?resizew=151)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08f8b463fcecf0a757f386db56e074d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3febf04c5726ce8133a7937fe4565c68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16fd1bc6147d69777b26a35d48522f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa9c934d84feba963335cc7edf01610e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/20/7d3a6982-6d73-4595-bccd-f5b2188c9642.png?resizew=151)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
名校
解题方法
【推荐2】设
是两个不同的平面,m,l是两条不同的直线,则下列命题为真命题的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
A.若![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() | D.若![]() ![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
名校
解题方法
【推荐1】如图是正方体的平面展开图.关于这个正方体,有以下判断:
①
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ff65109fbe7d397800f32b47cf38a22.png)
②
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1730d35ab36060f1fffa0f5a833dad8.png)
③![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe5adc7bac57ffb00836c8a7fe4764f5.png)
④平面
平面
其中正确判断的序号是.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f09ad78d4eccd1a9c9ccd3c4af79c79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ff65109fbe7d397800f32b47cf38a22.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38c1cbbbe9f9f1cb5cf834240b7e44b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1730d35ab36060f1fffa0f5a833dad8.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe5adc7bac57ffb00836c8a7fe4764f5.png)
④平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2edb6fb6bb3f93def71d8e0cf4bc2014.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6610efa9507bd5e01b124297eb2e4d8.png)
A.① ③ | B.② ③ | C.① ② ④ | D.② ③ ④ |
您最近一年使用:0次
单选题
|
较易
(0.85)
【推荐2】把正方形ABCD沿对角线BD折成直二面角后,下列命题正确的是( )
A.![]() | B.![]() |
C.![]() ![]() | D.平面![]() ![]() |
您最近一年使用:0次