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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.
A.16 days
B.14 days
C.19 days
D.20 days
B.14 days
C.19 days
D.20 days
参考答案
参考解析
解析：题意：每一个方块代表一个活动，其中的数字是互动持续时间（天为单位），求关键路径的时间。
关键路径就是看每一个并行过程最大值的路径。如图，应该是：3→6→7→1→2，共19天。
关键路径就是看每一个并行过程最大值的路径。如图，应该是：3→6→7→1→2，共19天。
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