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Each box is an activity; the number it contains is the duration of the activity in days. T

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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)

A．16days

B．14days

C．19days

D．20days

参考答案:

C解析：关键路径为最长时间的线路，3+6+7+1+2=19。

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