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【单选题】
电影《泰坦尼克号》里,男主人公杰克在海水里被冻死而女主人公罗丝却因躺在筏上而幸存下来 ,主要原因是A.
女性比男性更能承受低温
B.
女性比男性的求生欲望更强
C.
杰克在海水里其身体与海水间由于自然对流交换热量，而罗丝在筏上其身体与空气之间产生自然对流。在其他条件相同时，水的自然对流强度要远大于空气，因此杰克身体由于自然对流散失能量的速度比罗丝快得多。
D.
海水比空气更冷
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【单选题】在C# 中,可以使用枚举变量来避免不合理的赋值,以下枚举定义中正确的是( )
A.
public Sex enum { male,femal }
B.
public enum Sex{ male,femal;
C.
public enum Sex{ male,femal }
D.
public Sex enum { male,femal; }
【单选题】听力原文：W：Why are you so upset? You told me that you picked up 200 dollars on the bus．I thought you should be happy． M：Yes，then another passenger also saw the money，and I gave him a half，but I didn't fin...
A.
He got 200 dollars on the bus.
B.
He got 100 dollars at home.
C.
He lost 100 dollars on the bus.
D.
He lost 200 dollars at home.
【单选题】听力原文：W: Why are you so upset? You told me that you picked up 200 dollars on the bus. 1 thought you should be happy. M: Yes, then another passenger also saw the money, and 1 gave him a half, but 1 didn...
A.
He got 100 dollars at home.
B.
He lost 200 dollars at home.
C.
He got 200 dollars on the bus.
D.
He lost 100 dollars on the bus.
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