（ ） 能最准确地计算活动的历时（AD）。
- A.AD=工作量/人员生产率
- B.A.D=工作量/人力资源数量
- C.A.D=（最乐观时间+4最可能时间+最悲观时间）/ 6
- D.A.D=人员生产率×项目规模
正确答案及解析
正确答案
B
解析
暂无解析
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