名校
解题方法
1 . 正方体
的棱长为2.点P在正方体的体对角线
上(包含端点),点Q在正方体的棱
上(包含端点),则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/13/c484bb29-e25b-476a-bad6-50839ba1fa3b.png?resizew=188)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c597ff77c65c5add6f50294e3eee9536.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/13/c484bb29-e25b-476a-bad6-50839ba1fa3b.png?resizew=188)
A.直线![]() ![]() |
B.点P在![]() ![]() ![]() ![]() |
C.当点P、Q分别为![]() ![]() ![]() ![]() |
D.当点Q为棱![]() ![]() ![]() ![]() |
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