【单选题】在关系模型中,若某个关系存在多个候选码,则选定其中一个候选码为 ( ) 。
【单选题】According to the writer, teamwork is more effective in the field of sport because the players
A.
know what they want to achiev
B.
are more competitive by natur
C.
have more individual talen
D.
can be driven by national prid
【判断题】The foreign policies of a country have a direct effect on a firm’s international marketing success.
【单选题】The teamwork is ________ on mutual respect, trust and understanding.
【单选题】请看下面一段程序: def test(a,b,*args, **kwargs): print(args) print(kwargs) test(11,22,33,44,m=55) 运行程序,最终输出的结果为( )。
【判断题】表达式(int )((double)9/2)-9%2的值是3