名校
解题方法
1 . 如图,在棱长为2的正方体
中,
分别为
的中点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31be3b7305d6c181420ea7b28c420851.png)
A.![]() | B.CE与OF所成角的余弦值为![]() |
C.![]() | D.![]() ![]() |
您最近一年使用:0次
2024-05-29更新
|
613次组卷
|
2卷引用:湖北省恩施州高中教育联盟2023-2024学年高二下学期4月期中考试数学试题
名校
解题方法
2 . 如图,在长方体
中,
,
,若
为
的中点,则以下说法中正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/16/237635eb-0161-4699-959c-c26771d52185.png?resizew=163)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7d64fc81c857b124268609a8beb77b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/16/237635eb-0161-4699-959c-c26771d52185.png?resizew=163)
A.线段![]() ![]() |
B.异面直线![]() ![]() ![]() |
C.点![]() ![]() ![]() |
D.三棱锥![]() ![]() |
您最近一年使用:0次
解题方法
3 . 已知正方体
的棱长为1,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
A.直线![]() ![]() ![]() |
B.点![]() ![]() ![]() |
C.平面![]() ![]() ![]() |
D.直线![]() ![]() ![]() |
您最近一年使用:0次
名校
解题方法
4 . 在空间直角坐标系
中,
、
、
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a834024400d0730af3e640ca4d5f54b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33b5103a4c35ab0c395c68690a300023.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aa27f79147ec5171c0c3cdee4d43937.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ca47790d04e7880ee9d5f6a0600693.png)
A.![]() |
B.异面直线![]() ![]() ![]() |
C.点![]() ![]() ![]() |
D.直线![]() ![]() ![]() |
您最近一年使用:0次
解题方法
5 . 如图,正方体
的棱长为
,
是
上的动点,以下说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/11/4fb69796-7b28-44d1-bf6e-2aec8052b64f.png?resizew=168)
A.![]() | B.与![]() ![]() |
C.![]() ![]() ![]() | D.平面![]() ![]() |
您最近一年使用:0次
解题方法
6 . 如图,平行六面体
的底面
是菱形,且
,
,则下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/2/534094d1-58d0-4c46-bb1a-605096c4a9b2.png?resizew=183)
![](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/92105835f8075cb75dff244e908370b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f2a0a606abf89fbd04687717b366ed.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/2/534094d1-58d0-4c46-bb1a-605096c4a9b2.png?resizew=183)
A.![]() | B.![]() ![]() ![]() |
C.![]() | D.点![]() ![]() ![]() |
您最近一年使用:0次
2023-12-02更新
|
438次组卷
|
2卷引用:广西壮族自治区玉林市2023-2024学年高二上学期11月期中考试数学试题
名校
解题方法
7 . 下列四个结论中正确的是( )
A.已知![]() ![]() |
B.已知向量![]() ![]() ![]() ![]() ![]() |
C.若A,B,C,D四点共面,则存在实数![]() ![]() ![]() |
D.已知空间中的点![]() ![]() ![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
2023-11-26更新
|
327次组卷
|
2卷引用:河南省周口市项城市5校2024届高三上学期11月联考数学试题
名校
解题方法
8 . 在空间直角坐标系中,设
、
分别是异面直线
、
的两个方向向量,
、
分别是平面
、
的两个法向量,若
,
,
,
,下列说法中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4733a43364bdf78f59757c8f8c3fb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e95763e154888a080b3b96ff7fb3b39f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48440821e27e98cd711c5267f4ac3a5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942253c125c9b38b3b949e92b8879cb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5722b612a991e278f843b13ffcac268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c35d17d65685fa40f498c2a337b79a05.png)
A.![]() | B.![]() |
C.![]() | D.异面直线![]() ![]() ![]() |
您最近一年使用:0次
名校
解题方法
9 . 如图,长方体
中,
是侧面
的中心,
是底面
的中心,点
在线段
上运动,则下面选项正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/20/e3d99e15-bcd8-4f9d-ad81-6f257c5c6274.png?resizew=194)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84c7fd3ac969abd27229aa91608faeb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7253ffd3fc633d861810ee2e872188b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](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/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/20/e3d99e15-bcd8-4f9d-ad81-6f257c5c6274.png?resizew=194)
A.四面体![]() |
B.点![]() ![]() ![]() |
C.异面直线![]() ![]() ![]() |
D.存在点![]() ![]() ![]() ![]() |
您最近一年使用:0次
2023-11-19更新
|
364次组卷
|
2卷引用:辽宁省高级中学2023-2024学年高二上学期期中数学试题
解题方法
10 . 已知正方体
中,
,
,
,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51d0fdc5a00ca0e857b89a7e1420df29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ddcc0295e334717dff21aaa3bf0dbf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcedb75163ea581a8d72b4f5c24af951.png)
A.若![]() ![]() ![]() ![]() ![]() |
B.若![]() ![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() |
D.若![]() ![]() |
您最近一年使用:0次