名校
解题方法
1 . 如图,已知在棱长为2的正方体
中,
为
上的动点,则下列结论正确的有( ).
![](https://img.xkw.com/dksih/QBM/2021/6/5/2736600346206208/2768833350500352/STEM/66cc204f-92a3-4070-9ad3-86798a49fa2d.png?resizew=245)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://img.xkw.com/dksih/QBM/2021/6/5/2736600346206208/2768833350500352/STEM/66cc204f-92a3-4070-9ad3-86798a49fa2d.png?resizew=245)
A.当![]() ![]() ![]() ![]() ![]() |
B.当![]() ![]() ![]() ![]() |
C.当点![]() ![]() ![]() ![]() ![]() |
D.当![]() ![]() ![]() ![]() |
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