1 . 有一长方形的纸片
,
的长度为
,
的长度为
,现沿它的一条对角线
把它折成直二面角,则折叠后
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/095ab4a92bf822e175d370e6d0c8a730.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976260cbf5e30856d4fd37a4b0a671a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c0098e82d41438224ce472054e5490.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 已知向量
,则向量
在向量
上的投影向量
的坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/671ffb780b3c36cd2435c4af6417b349.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)
A.![]() | B.![]() | C.![]() | D.![]() |
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3 . 已知向量
,
,则
在
方向上的投影向量为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5d96202dad13d94287a2016700ef6d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5113b1c3b57eb6e3fa35e86cb05bae60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
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4 . 从棱长为
的正方体的八个顶点中任意取四个点
,则
值的不同种数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c82a10b4f0c9323d726804c89dd9548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec92d556c107f92dddb25625d3560309.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024高三·全国·专题练习
名校
5 . 如图,四个棱长为
的正方体排成一个正四棱柱,
是一条侧棱,
是上底面上其余的八个点,则
的不同值的个数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/5/15/e58af709-f757-495a-891e-5432a747e703.png?resizew=179)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/931eb4256c71eaeff9b9c177aac1b380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d0c8cb9dadb29fba7ea07d971656713.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/5/15/e58af709-f757-495a-891e-5432a747e703.png?resizew=179)
A.1 | B.2 | C.4 | D.8 |
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2024-06-09更新
|
455次组卷
|
5卷引用:期末押题卷02(考试范围:高考全部范围)-【帮课堂】2023-2024学年高二数学同步学与练(苏教版2019选择性必修第二册)
(已下线)期末押题卷02(考试范围:高考全部范围)-【帮课堂】2023-2024学年高二数学同步学与练(苏教版2019选择性必修第二册)(已下线)专题10 平面向量(理科)-1江西省南昌市第十九中学2024届高三下学期第五次模拟考试数学试卷(已下线)核心考点2 平面向量的数量积 A基础卷 (高一期末考试必考的10大核心考点)(已下线)第2题 投影向量(高一期末每日一题)
名校
6 . 已知空间向量
,
,则向量
在向量
上的投影是____________ .(用坐标表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e14e6ce38d3aa1cf65e5ae2ec9eb157e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380198c5e99b2e86c1b78d5344bc3ead.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
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7 . 由四个棱长为1的正方体组合成的正四棱柱
(如图所示),点
是正方形
的中心,则
( )
![](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/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db00203ccba70779c9e2151b43765b92.png)
A.1 | B.2 | C.3 | D.4 |
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名校
8 . 棱长为1的正方体
中,下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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9 . 如图,在四棱锥
中,底面
为菱形,
,
,
为棱
的中点,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d476da94dcade5f83541f3fca22a1039.png)
______ .
![](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/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/970bd8c6012979f91c4b370fad352d47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20f88c036d89f947473c4e831d565da0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d476da94dcade5f83541f3fca22a1039.png)
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