名校
1 . 已知集合
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c74926c2f539695a2c0a460f77b1df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2 . 计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c0768f9570e4824b583973c6056f5af.png)
_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c0768f9570e4824b583973c6056f5af.png)
您最近一年使用:0次
A.![]() | B.![]() | C.![]() | D.![]() |