名校
1 . 已知在四面体
中,点
是棱
上的点,且
,点
是棱
的中点,若
其中
为实数,则
的值是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/be797b5d-331a-48d7-991e-6a63f15b71de.png?resizew=146)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f88011a75e5398a087f80dc1f4159a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44ae38585813c6eeefdcc61df52e4547.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a14c388e1e2e5a2ff1ccf6caffbee0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1433c8103033c67232f2f9ae189608d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/be797b5d-331a-48d7-991e-6a63f15b71de.png?resizew=146)
A.![]() | B.![]() | C.-2 | D.2 |
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2020-02-09更新
|
749次组卷
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7卷引用:湖北省襄阳市第五中学2021-2022学年高二上学期9月月考数学试题
湖北省襄阳市第五中学2021-2022学年高二上学期9月月考数学试题江苏省常州市溧阳市2019-2020学年高二上学期期末数学试题(已下线)第一章+空间向量与立体几何(基础过关)-2020-2021学年高二数学单元测试定心卷(人教A版2019选择性必修第一册)(已下线)第三章++空间向量与立体几何(基础过关)-2020-2021学年高二数学单元测试定心卷(人教版选修2-1)(已下线)练习10+空间向量及其运算-2020-2021学年【补习教材·寒假作业】高二数学(苏教版)江苏省扬州市高邮中学2020-2021学年高二上学期阶段测试(四)数学试题四川省遂宁中学校2022-2023学年高二上学期10月月考数学(理)试题
2 . 若空间四点
满足
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f68923146cb9aa2fec930b91fdc9b24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3974edbf0af217e7db681007c317396a.png)
A.![]() ![]() |
B.![]() ![]() |
C.点P可能在直线![]() ![]() |
D.![]() ![]() ![]() |
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3 . 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.![]() |
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2021-10-15更新
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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
4 . 在四面体
中,点
在
上,且
,
为
中点,则
等于( )
![](https://img.xkw.com/dksih/QBM/2020/4/3/2433297950605312/2436995336544256/STEM/5331b772b2494930bd2270bc263d578a.png?resizew=187)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9839448fd9fc1777c0638195d26a78d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6b5a51e65e9b56a9970de33ead263a9.png)
![](https://img.xkw.com/dksih/QBM/2020/4/3/2433297950605312/2436995336544256/STEM/5331b772b2494930bd2270bc263d578a.png?resizew=187)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
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2020-04-08更新
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598次组卷
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4卷引用:湖北省黄冈市蕲春县2021-2022学年高二上学期期中数学试题
湖北省黄冈市蕲春县2021-2022学年高二上学期期中数学试题北京市东城区2019-2020学年高二年级上学期期末教学统一检测数学试题新课练15 空间向量与立体几何-2020年【衔接教材·暑假作业】新高二数学(2019人教版)(已下线)1.1 空间向量及其运算(精炼)-2020-2021学年一隅三反系列之高二数学新教材选择性必修第一册(人教版A版)
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5 . 如图,在空间四边形
中,点
为
中点,点
在
上,且
, 则
等于
![](https://img.xkw.com/dksih/QBM/2018/5/11/1943126479527936/1950609721008128/STEM/51da1a7e-e2c5-4513-81d6-3d6d4f502f3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/834d05f93d8186ba205b4203c79decfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a449b69791ba25c6eed7d71fe508fdb.png)
![](https://img.xkw.com/dksih/QBM/2018/5/11/1943126479527936/1950609721008128/STEM/51da1a7e-e2c5-4513-81d6-3d6d4f502f3b.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2018-05-22更新
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5卷引用:湖北省孝感市八校教学联盟2017-2018学年高二下学期期中联合考试数学(理)试卷
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6 . 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.![]() |
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2022-10-13更新
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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
7 . 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 |
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8 . 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.![]() |
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