题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064419-76150.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064419-78746.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064419-30820.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064420-52273.png)
A.2 | B.-2 | C.1 | D.-1 |
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064420-38815.png)
核心考点
试题【己知是夹角为的两个单位向量,,若,则m为:( )A.2B.-2C.1D.-1】;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
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064413-32325.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064413-82876.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064414-11722.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064414-71952.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064414-98743.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064414-16772.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064401-90873.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064401-69974.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064401-45911.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064401-38993.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064402-83218.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064401-38993.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064402-83218.gif)
(2)设向量
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064402-93964.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064402-21423.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064402-16724.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064402-64552.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064403-89636.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064403-68460.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064403-89636.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064355-76484.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064356-80003.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064349-86216.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064345-51741.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064345-32353.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064345-70907.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064345-92008.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064346-75663.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104064346-65013.gif)
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