已知向量
,
,
,若
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0b168037725c96a728d97de02f848ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b087de2ab6e760993ac0714d49844e59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53761996ef7e4228e0110bd4133b5a1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bd9736828195f010db4e1f0a9dea7a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a2a6696f9c8ca15b3ad2397e9966ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2020-02-13 22:16:28
|
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单选题
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较易
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名校
解题方法
【推荐2】已知平面向量
,则与
同向的单位向量为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4fedfbc7ef4277e203f37c63fc35b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
解题方法
【推荐1】已知向量
,
,且
,则m的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6569e50f43b3d8645652ecc13b62066e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3471223fbd8d687ea4e37ee7aa632772.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e75f8f80480d4ef599a803947811bc3d.png)
A.1 | B.![]() | C.4 | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
解题方法
【推荐2】已知向量
,
,且
,那么
的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926df9f772b9b5c3b2462e8ab75c99c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28903babaf3cf8818d9053d594931932.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1456f97f337cccfec4b5804c7e3e3382.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.2 | B.3 | C.4 | D.6 |
您最近一年使用:0次