名校
1 . 如图,在四面体
中,
,
,
,点
为
的中点,
,则
( )
![](https://img.xkw.com/dksih/QBM/2021/10/13/2828613127675904/2829352748670976/STEM/93fadf12-cc22-4957-8063-2f2a1a9f7657.png?resizew=255)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/732e8008564ec12576ac60e498b28067.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e42eacb57037d08cf18946fe8e33bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25ee2e0dc73bc0f68063d55843ee2263.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52749d58261c7d034090f1648318e322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aee22ec5ff0e7521aacec26a2f38103.png)
![](https://img.xkw.com/dksih/QBM/2021/10/13/2828613127675904/2829352748670976/STEM/93fadf12-cc22-4957-8063-2f2a1a9f7657.png?resizew=255)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2021-10-15更新
|
425次组卷
|
4卷引用:湖北省四校协作体2021-2022学年高二上学期11月联考数学试题
名校
2 . 如图,已知
、
分别为四面体
的面
与面
的重心,且
为
上一点,且
,设
,
,
,试用
,
,
表示
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/905943d59ef17fdb1d29b626b0847d29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac265febbf99dccf51aa0a2253e61f1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18663288c2245e1febaa003e3b58f56a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4f5b4798ad828329eeee4ab65d12012.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d366d8fbb7258ee051f49977441e14a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/472dfa1c1e44c00e58a4712c3dea4247.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f847a413b630a37a33b071c6c32ef126.png)
![](https://img.xkw.com/dksih/QBM/2020/10/15/2571612764430336/2572865473380352/STEM/d38ae32f586645d9ba15eb9d039870b3.png?resizew=192)
您最近一年使用:0次
2020-10-17更新
|
405次组卷
|
3卷引用:湖北省黄冈市黄梅国际育才高级中学2023-2024学年高二上学期9月月考数学试题
名校
3 . 在棱长为
的正方体
中,
为正方体内一动点(包括表面),若
且
. 则点
所有可能的位置所构成的几何体的体积是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](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/c81f3d7d77e49e423e1315d629beb677.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/184bdabcc83fb710ad7fab7fbea77065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-10-13更新
|
162次组卷
|
6卷引用:湖北省荆州市沙市中学2022-2023学年高二上学期第一次月考数学试题
4 . 平行六面体
中,
,
,
,则对角线
的边长为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c75d858555bcbba9d936f6679e648147.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d3fe15fddbe7f946727540f627ba950.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76b9b6e2f23529f7cdd8b06ef4f66c44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
A.![]() | B.![]() | C.![]() | D.12 |
您最近一年使用:0次
5 . 在四棱锥
中,底面
是平行四边形,设
,则
可表示为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd47f2c08fb52d822c5c32e0dadd5da9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ca8a6a68692282b7fe5861c4ae4e42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9832024195a3064e228344881bfe1d03.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次