题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002600-71687.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002601-96749.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002601-22660.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002601-87444.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002601-57627.png)
A.充分而不必要条件 | B.必要而不充分条件 |
C.充要条件 | D.既不充分也不必要条件 |
答案
解析
试题分析:
①当
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002601-59376.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002601-92926.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002602-19692.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002601-57627.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002601-57627.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002601-87444.png)
②当
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002602-76412.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002601-92926.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002602-19692.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002601-57627.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002601-57627.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002602-87445.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002602-24631.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002601-87444.png)
③当
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002602-92435.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002601-57627.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002601-57627.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002601-87444.png)
综上所述,“存在集合
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002601-22660.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002601-87444.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002601-57627.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002557-81056.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002557-53133.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002557-27939.png)
A.充要不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既不充要又不必要条件 |
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002554-15647.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002554-58713.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002554-36372.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002554-88974.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充分必要条件 | D.既不充分也不必要条件 |
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002550-89467.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002550-83623.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002550-27406.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002551-91646.png)
A.充分而不必要条件 | B.必要而不必要条件 |
C.充分必要条件 | D.既不充分也不必要条件 |
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002547-42989.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002547-82112.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002547-24501.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002547-78243.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002547-42989.png)
A.![]() ![]() |
B.![]() ![]() ![]() |
C.![]() ![]() ![]() |
D.![]() ![]() ![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002545-71556.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002545-44303.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002545-83730.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002545-71556.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103002545-36191.png)
A.充分不必要条件 | B.必要不成分条件 |
C.充要条件 | D.既不充分也不必要条件 |
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