13-14高三·全国·课后作业
名校
1 . 如图所示,空间四边形
中,
,点
在
上,且
,
为
中点,则
等于
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/27/9b7ad973-e508-4804-acb7-84313c9696ba.png?resizew=157)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22e1f9e589e95556d65a81522c07915.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fe625de6d06d9bd2337706688b58bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f7c19ffd67b5edd77b02d893f3c4156.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/27/9b7ad973-e508-4804-acb7-84313c9696ba.png?resizew=157)
A.![]() | B.![]() | C.![]() | D.![]() |
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