计算患病率的分子是（）

A.观察期间某病的新发病例数

B.观察期间某病的现患病例数

C.观察期间之前某病的患病人数

D.观察期间某病的暴露人口数

E.以上均不是

The Time Management function as it relates to personnel ______.

A) refers primarily to the manner in which the project manager and the various functional contributions to the project manage their time on a daily basis
B) should not be emphasized because it develops a "clock-watching" mentality in the project team
C) consists of four overlapping processes, planning, estimating, scheduling, and controlling
D) consists of two overlapping processes, planning and controlling