名校
1 . 如图,在正三棱柱
中,
,
,P为线段
上的动点,且
,则( )
![](https://img.xkw.com/dksih/QBM/2022/6/6/2995606837575680/2996383439331328/STEM/dcde28f0-1ecc-4b0b-b9b9-f26e3a5286fb.png?resizew=128)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca37feb165ab4711a42c47fe929e5624.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ab543282d9b830fda43ddf62762208.png)
![](https://img.xkw.com/dksih/QBM/2022/6/6/2995606837575680/2996383439331328/STEM/dcde28f0-1ecc-4b0b-b9b9-f26e3a5286fb.png?resizew=128)
A.存在![]() ![]() |
B.当![]() ![]() ![]() |
C.当![]() ![]() ![]() ![]() |
D.过![]() ![]() ![]() |
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2022-06-07更新
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