题目
题型:不详难度:来源:
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答案
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104074040-99098.gif)
解析
核心考点
试题【已知向量,设向量,则 。】;主要考察你对平面向量数量积的意义等知识点的理解。[详细]
举一反三
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A.1 | B.![]() | C.-1 | D.![]() |
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A.
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104074016-72241.gif)
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![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104074017-85983.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104074010-79013.gif)
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A.(![]() ![]() | B.(2,6) | C.![]() | D.![]() |
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