关键路径法是利用进度计划网络图所进行的一种分析技术，下面关于关键路径的说法中正确的是 （ ）
- A.网络图中只有一条关键路径
- B.关键路径上各活动的时间之和最少
- C.非关键路径上某活动发生延误后项目总工期必然会发生延误
- D.非关键路径上的活动延误时间如果不超过总时差，项目总工期就不会发生延误
正确答案及解析
正确答案
解析
总时差表示不影响总工期的时间。
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