Each box is an activity; the number it contains is the duration of the activity in days. The duration of the critical path is (75) .
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Each box is an activity; the number it contains is the duration of the activity in days. The duration of the critical path is (75) .
关键路径是计算项目中耗时最长的活动序列。根据提供的图形,我们可以确定关键路径为:3天(启动)→6天(设计)→7天(采购)→1天(运输)→2天(安装)。这些活动的时间总和为19天。因此,关键路径的总时长为19天,答案为C。
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