Industrial Engineering and Production Management
Which of the following are the guidelines for the construction of a network diagram?

Dangling must be avoided in a network diagram
All of the these
Each activity is represented by one and only one arrow in the network
Dummy activity consumes no time or resource

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

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

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