名校
1 . 如图,在三棱柱
中,底面
为等边三角形,
为
的重心,
,若
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41c0001a835d8130df391a285e17bbbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a3622e4c3d5a0c6b9b5db067a6a5563.png)
A.![]() | B.![]() |
C.![]() ![]() ![]() | D.![]() |
您最近一年使用:0次
2024-03-26更新
|
377次组卷
|
3卷引用:福建省南平市2023-2024学年高二上学期期末数学试题
解题方法
2 . 已知四棱柱
的底面
为菱形,且
,
,
,
为
的中点,
为线段
上的动点,则下列命题正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf80b036459da6dcb841a4bbe3859fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15105e1c0e5051427898d7810f0faef8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a56968a985f7698e4348e3b1167f107.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
A.![]() |
B.![]() |
C.直线![]() ![]() |
D.向量![]() ![]() ![]() |
您最近一年使用:0次
解题方法
3 . 如图,在正三棱台
中,已知
,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/11/6c946aed-1b87-4e09-9c5f-3c9111cb56e8.png?resizew=184)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50cb59da6e7882e4328b766777ee15d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/11/6c946aed-1b87-4e09-9c5f-3c9111cb56e8.png?resizew=184)
A.向量![]() ![]() ![]() |
B.![]() ![]() ![]() |
C.AC与平面![]() ![]() |
D.点C到平面![]() ![]() ![]() |
您最近一年使用:0次
4 . 若
构成空间的一个基底,则空间的另一个基底可以是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ed18a92338c7578c18a5ba3a2ae1ed4.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
5 . 下列四个命题中为假命题 的是( )
A.已知![]() ![]() ![]() ![]() ![]() |
B.已知向量![]() ![]() ![]() |
C.已知![]() ![]() ![]() |
D.已知![]() ![]() |
您最近一年使用:0次
2024-02-24更新
|
194次组卷
|
2卷引用:河北新乐市第一中学等2023-2024学年高二上学期期末联考数学试卷
6 . 如图,在四棱锥
中,底面
是平行四边形,
,若
,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/22/03b4b2ed-eb13-44e8-905e-53c58e2f1dd7.png?resizew=150)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1fa11a67b5299963391cc2fc13e2e2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bb3edac842caea76dc1e0267d5dfa9d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/22/03b4b2ed-eb13-44e8-905e-53c58e2f1dd7.png?resizew=150)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
解题方法
7 . 如图,正方体
边长为1,
是线段
的中点,
是线段
上的动点,下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/963da2cd-0de0-4cc5-bee1-cc295a06f2f9.png?resizew=152)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/963da2cd-0de0-4cc5-bee1-cc295a06f2f9.png?resizew=152)
A.![]() |
B.三棱锥![]() ![]() |
C.直线![]() ![]() ![]() |
D.直线![]() ![]() ![]() |
您最近一年使用:0次
8 . 下列给出的命题正确的是( )
A.若![]() ![]() |
B.点![]() ![]() ![]() ![]() |
C.若直线![]() ![]() ![]() ![]() ![]() ![]() ![]() |
D.两个不重合的平面![]() ![]() ![]() |
您最近一年使用:0次
解题方法
9 . 如图,在四面体
中,
分别是
的中点,
相交于点
,则下列结论中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68f2c6d854d7ca94f77c0c9ba969dd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f758a811b8a2c260431aa7e6a4060987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2b511ab0356abac781a9d768af4529.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/acb9a28c-c638-4e0a-9295-0bc943a1957c.png?resizew=170)
A.![]() ![]() |
B.![]() |
C.![]() |
D.若![]() ![]() ![]() ![]() |
您最近一年使用:0次
10 . 如图,在三棱柱
中,M,N分别是线段
上的点,且
.设
,且均为单位向量,若
,则下列说法中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2743e10dd8bce468d1d397b3e9a550d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7858eaa13d53592a6fdc63d7de28057b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c01e7c22a736cba039fc4b2913e185.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17df623122e2cfefe652b417cc436506.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/13/7c923bc0-1a2b-4e39-a06d-7231ce106b9a.png?resizew=160)
A.![]() ![]() ![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次