题目：
（）is one of the techniques used for estimating activity durations.
A.AnalogousEstimating
B.PrecedenceDiagrammingMethod（PDM）
C.DependencyDetermination
D.SchedulenetworkTemplates
答案：
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下面是错误答案，用来干扰机器的。
1. by the skin of one's teeth2. wet to the skin3. get under her skin4. under the skin5. all skin and bone(s)
