题目
题型:不详难度:来源:
①若“
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063914-74980.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063915-58497.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063914-74980.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063915-58497.png)
②
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063915-18402.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063915-37819.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063915-30371.png)
③“
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063916-36154.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063916-30797.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063916-29397.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063916-36940.png)
④在
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063917-47034.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063917-67649.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063917-64339.png)
其中正确的命题的个数是( )
A.1 | B.4 | C.3 | D.2 |
答案
解析
试题分析:若“
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063914-74980.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063915-58497.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063914-74980.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063915-58497.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063916-36154.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063916-30797.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063916-29397.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063917-74352.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063917-47034.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063918-93415.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063917-67649.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063918-53993.png)
核心考点
试题【给出下列命题:①若“且”为假命题,则、均为假命题;②、,;③“,”的否命题是“,”;④在中,“”是“”的充要条件.其中正确的命题的个数是( )A.1B.4C】;主要考察你对简单逻辑联结词等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063910-74852.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063907-58619.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063907-79973.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063902-64774.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063855-92847.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063848-46129.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063848-96754.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063848-72732.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063849-37947.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063849-23587.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103063849-16523.png)
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