已知R是实数集,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9766a4148b0c2bb449e053d005e95731.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24b44e4aa3fc5572a2d6fcf3e0be33db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9766a4148b0c2bb449e053d005e95731.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2019-10-12 19:07:04
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【推荐1】设全集U是实数集R,
与
都是U的子集(如右图所示),则阴影部分所表示的集合为
![](https://img.xkw.com/dksih/QBM/2016/12/10/1579116814262272/1579116814417920/STEM/299e3d3ae500464794c451ba404efbed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9974ab0472d68c5c1d7f7ef3b320d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77ddd63baa94be7bfdde4906fce9e72c.png)
![](https://img.xkw.com/dksih/QBM/2016/12/10/1579116814262272/1579116814417920/STEM/299e3d3ae500464794c451ba404efbed.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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单选题
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较易
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【推荐2】全集
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7dd0c6a98527e89e9e6b5b3de8ba1d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8538e1823720654a5c6f8a7ff257b200.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次