题目内容

下列关于关键路径的说法中,正确的是( ). I.改变网上某一关键路径上的任一-关键活动后,必将产生不同的关键路径 II.在AOE图中,关键路径上活动的时间延长多少,整个工程的时间也就随之延长多少III.缩短关键路径上任意一个关键活动的持续时间可缩短关键路径长度 IV.缩短所有关键路径上共有的任意一个关键活动的持续时间可缩短关键路径长度V.缩短多条关键路径上共有的任意一个关键活动的持续时间可缩短关键路径长度

A. II和V
B. I、II和IV
C. II和IV
D. I和IV

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