set2={1,2,3}set2.add(5)=set2.remove(1)=set2.discard(1)=len(set2)=2 in set2=2 not in set2=set6=set2.copy(); set6=set2.clear();set2=

要关闭交互模式，应执行哪一个命令（）. A: SET TALK ON B: SKIP C: CLEAR D: SET TALK OFF

要关闭交互模式，应执行哪一个命令（）. A: SET TALK ON B: SKIP C: CLEAR D: SET TALK OFF

A clear goal can not set the tone for the meeting and determine its direction. A: 正确 B: 错误

如果不希望用户能终止执行中的程序或命令，应执行哪一个命令（）. A: SET ESCAPE OFF B: SET ESCAPE ON C: CLEAR D: SET TALK ON

在set接口中使用哪个方法查询元素数() A: clear() B: addAll() C: size() D: visitDeclared()

What is Mark Zuckerberg and Jack Ma's suggestions for new entrepreneurs based on their talk in Lesson 2? A: You’d better have a clear idea about what problem you wish to solve before you set up a company. B: The most important thing is to have real passion for your work. C: It’s very cool to have a company in the Silicon Valley no matter the founder has a clear goal or not. D: Sell your house if necessary to set up a company.

接上题，（2）应该填写（ ）。 A: (rst_n==1'b0) B: (set) C: (set==1'b0) D: （!set）

declare @x int,@y int,@t int set @x=1 set @y=2 begin set @t=@x set @x=@y set @y=@t end print @x

‏下列语句，哪个不能创建一个集合？‍ A: set( ) B: (1, 2, 3) C: set((1, 2, 3)) D: {1, 2, 3}