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1 . 对于集合A,B,定义A\B=
且
,则对于集合A={
},B={
},
且
,以下说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5988bf315a64166f60f5e83ee63dc44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09bb7c317f907cd7fda5ae49b24f2d41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7667c8b7c51a4dbec279efe37159c95e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de17e720d2ff39869ca8ab1fa73e899e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdca3f0545c3796a22128874c78b0bf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32ef577bf5059fba198afb7eddb2f94c.png)
A.若在横线上填入”∩”,则C的真子集有212﹣1 个. |
B.若在横线上填入”∪”,则C中元素个数大于250. |
C.若在横线上填入”\”,则C的非空真子集有2153﹣2个. |
D.若在横线上填入”∪![]() ![]() |
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