一、选择题:本大题共10小题,每小题5分,共50分. 1. 已知集合P={x1≤2x<4},Q={yy=cosx,x∈R},则P∩Q等于( ) A. [0,1) B. [0,1] C. [-1,2) D. {0,1} 2. “a=1”是“函数f(x)=lg(ax 1)在(0, ∞)上单调递增”的( ) A. 充分不必要条件 B. 充分必要条件 C. 必要不充分条件 D. 既不充分也
Gossip-based protocols have attracted more and more attention because of their simplicity and reliability.They can be applied to large-scale overlays for solvin