- A.每个任务从何时开始
- B.每个任务到何时结束
- C.各任务之间的并行情况
- D.各任务之间的依赖关系
正确答案及解析
正确答案
解析
PERT即计划评审技术，是目前项目管理的一项重要手段和方法，利用它能协调整个计划的各道工序，合理安排人力、物力、时间、资金，加速计划的完成。
从图中给出的信息我们可以看出，我们知道每个任务的最早开始时间，最晚开始时间，任务持续的时间，那么就应该能清晰的知道每个任务从何时开始以及每个任务何时结束，另外从图的箭头我们也能清楚地知道各任务之间的依赖关系。因此不能清楚描述的是各任务之间的并行情况。
要找关键路径，就是要找图中最长的路径，很容易我们可以找到是路径ABEGHJK，其关键路径的长度是7+4+10+4+10+5=40。
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