PDM is a method of constructing a project schedule network diagram that uses boxesor rectangles, referred to as nodes, to represent activities and connects them with arrows thatshow the dependencies.This method includes following types of dependencies or precedence relationships:F-S, the initiation of the successor activity, depends upon the completion of thepredecessor activity.（） , the initiation of the successor activity, depends upon the initiation of thepredecessor activity.

2023-08-25

A.F-S
B.F-F
C.S-F
D.S-S

参考答案：D

PDM是以一种方块或矩形（或称为节点）来表示活动，并将它们用表示依存关系的剪线链接起来，以构建项目进度网络图的方法。这种方法包括了下列依存或前导关系：完成---开始（F-S），后续活动的开始依赖于前置活动的完成。开始---开始（S-S），后续活动的开始依赖于前置活动的启动。

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