1 . 下列全称量词命题与存在量词命题中:
①设A、B为两个集合,若
,则对任意
,都有
;
②设A、B为两个集合,若
,则存在
,使得
;
③
是无理数
,
是有理数;
④
是无理数
,
是无理数.
其中真命题的个数是( )
①设A、B为两个集合,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad78dc8b8aed907b4fe9640c997454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
②设A、B为两个集合,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a28416d5084332c5ec84ad20b95eab87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/653bcf7b627c3b87fcb310732313d9b0.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43101bdeef115bf28e849c51c51fd39c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4ca8bdc812627d925f00ed7c145d696.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43101bdeef115bf28e849c51c51fd39c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4ca8bdc812627d925f00ed7c145d696.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d800f03de80068a1172beac3a2c75587.png)
其中真命题的个数是( )
A.1 | B.2 | C.3 | D.4 |
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2021-10-29更新
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3卷引用:河北省省级联测2021-2022学年高一上学期第一次考试数学试题
河北省省级联测2021-2022学年高一上学期第一次考试数学试题(已下线)专题01 集合与常用逻辑用语常考基础题型-2021-2022学年高一《新题速递·数学》(人教A版2019)广东省广州市越秀区2021-2022学年高一上学期期末数学试题