题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033727-98462.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033727-98417.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033727-75987.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033727-41979.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033728-87909.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033728-94195.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033728-49607.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033728-45942.jpg)
A.![]() | B.![]() |
C.![]() | D.![]() ![]() |
答案
解析
试题分析:
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033730-88483.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033730-55315.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033730-93832.png)
核心考点
试题【如图,的边长为,分别是中点,记,,则( )A.B.C.D.,但的值不确定】;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/20191104/20191104033722-40102.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033723-46151.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033723-54001.png)
①直线
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033711-27939.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033711-75277.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033711-21217.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033712-47948.png)
②对任意角
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033712-57399.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033712-31385.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033712-78660.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033713-71405.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033713-75410.png)
③若
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033713-24057.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033714-23018.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033713-24057.png)
④对任意的正数
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033714-32554.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033714-45400.png)
其中所有正确结论的编号是_____________.
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033657-26290.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033658-76515.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033658-16586.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033658-62994.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033658-45360.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033659-69127.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033659-21018.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033659-37275.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033657-26290.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033659-53973.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033657-26290.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033700-82430.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033658-62994.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033700-63406.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033700-27718.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033653-51397.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033653-78633.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033653-54981.png)
A.0 | B.1 | C.2 | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033648-53961.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033648-11645.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104033648-38113.png)
A.0 | B.1 | C.2 | D.![]() |
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