名校
1 . 在长方体
中,
,
,
,则下列命题为真命题的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d927585a17c2e98ef7d5a9589a26ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
A.若直线![]() ![]() ![]() |
B.若经过点A的直线![]() ![]() ![]() ![]() |
C.若经过点A的直线m与长方体所有面所成的角都为θ,则![]() |
D.若经过点A的平面β与长方体所有面所成的二面角都为![]() ![]() |
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