Industrial Engineering and Production Management
The essential condition for the decompression of an activity is that

After decompression the time of an activity invariably exceeds its normal time
The project time should change due to decompression
An activity could be decompressed to the maximum extent of its normal time
An activity could be decompressed to the maximum extent of its normal time

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Industrial Engineering and Production Management
Critical Path Net Work helps an engineer

All of these
To divert the resources from noncritical advanced activities to critical activities
To concentrate his attention on critical activities
To be cautious for avoiding any delay in the critical activities to avoid delay of the whole project

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