下图是某项目的进度网络图，则在保障不会影响项目总工期的情况下，活动E最多能拖延（ ）天。
- A.0
- B.1
- C.2
- D.3
正确答案及解析
正确答案
A
解析
本题考查的是关键路径法。
根据图可以分析出E在关键路径上，关键路径上的总浮动时间和自由浮动时间都为0。
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