【单选题】— Excuse me. Do you have a table for two? — I'm sorry, ____ there aren't any seats now. Would you mind ____ for a while? [ ]
【简答题】If you’ve ever been on a jury, you might have noticed that a funny thing happens the minute you get behind closed doors. Everybody starts talking about themselves. They say what they would have done i...
【简答题】自流式加油系统其特点是利用( )加油,结构简单,操作方便。
【单选题】现有两个集合 val s1:Set[Int] = Set(1,2,3) val s2:Set[Int] = Set(3,4,5) 那么s1.++(s2)结果是
A.
Set(5,1,2,3,4) //set是无序的
【单选题】—Excuse me. Do you have a table for two? —I’m sorry, _____ there aren’t any seats now. Would you mind waiting a while?