题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034232-26750.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034232-78960.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034232-52579.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034233-13622.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034232-26750.png)
答案
解析
试题分析:由已知有:
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034233-83303.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034233-70740.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034233-57660.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034233-13622.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034232-26750.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034234-19186.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034234-64359.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034234-48595.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034234-78516.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034233-13622.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034232-26750.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034233-13622.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034232-26750.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034234-19186.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034233-13622.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034232-26750.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034235-44281.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034235-68912.png)
核心考点
试题【已知向量的模为1,且满足,则在方向上的投影等于 .】;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/20191104/20191104034225-52666.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034225-73082.png)
A.1 |
B.-1 |
C.1或-1 |
D.不确定,与B的大小,BC的长度有关 |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034220-19672.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034220-63129.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034220-79211.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034220-19672.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034220-63129.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034220-19672.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034220-79211.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034220-19672.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034220-79211.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034220-63914.png)
A.以![]() ![]() |
B.以![]() ![]() |
C.以![]() ![]() |
D.以![]() ![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034214-87605.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034214-65683.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034214-87605.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034214-65683.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034215-63083.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034215-72509.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034214-87605.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034214-65683.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034215-65526.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034214-87605.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034215-65526.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034215-72509.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034209-65021.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034209-46610.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034204-53681.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034204-31487.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034204-22883.png)
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