【单选题】函数INDIRECT(ref_text,a1)的功能是( )
【单选题】What characterizes "24-hour cities" like New York?
A.
People can live without private cars.
B.
People are generally more competitive.
C.
People can enjoy services around the clock.
D.
People are in harmony with the environment.
【简答题】设完全图 有 n 个结点 ( n 3 2) , m 条边,当 时, 中存在欧拉回路.
【单选题】我国现阶段实行按劳分配为主体、多种分配方式并存的分配制度。形成这种分配制度的原因有很多,但其根本原因是()