题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020121-68492.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020121-88724.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020121-80438.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020122-83292.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020121-68492.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020121-80438.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020122-97264.png)
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020122-17544.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020122-36556.png)
核心考点
试题【向量,,若∥,则________.】;主要考察你对平面向量的基本定理及坐标表示等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020111-23159.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020111-94914.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020112-50892.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020112-79073.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020112-45450.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020112-68805.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020104-98797.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020104-58868.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020105-74907.png)
(Ⅰ)求以线段AB、AD为邻边的平行四边形ABCD两条对角线的长;
(Ⅱ)设实数t满足
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020105-12109.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020053-13025.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020053-73926.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020054-56432.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020054-26438.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020054-44365.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020054-86497.png)
(1)用向量
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020055-72937.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020055-33022.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020055-14816.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020055-29501.png)
(2)求晶体的对角线
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020056-49736.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020056-45410.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020049-93971.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020049-81169.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020043-63380.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020043-33569.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104020044-99653.png)
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