题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075107-95171.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075107-97575.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075107-28596.gif)
解析
核心考点
试题【在 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
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075102-55550.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075102-32705.gif)
A.![]() | B.2 | C.-2 | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075051-92947.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075053-56636.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075053-13124.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075053-28847.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075053-92368.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075053-64909.gif)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075046-91328.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075046-82070.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075046-95059.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075047-17794.gif)
A.-7 | B.9 | C.4 | D.-4 |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075039-19939.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075039-66358.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075040-14345.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075040-51134.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075033-40687.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075033-39606.gif)
(1)试确定实数
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075034-89932.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075034-37062.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075034-57242.gif)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075034-19567.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075034-96943.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075033-40687.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075033-39606.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075034-89932.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075034-37062.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104075034-57242.gif)
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