Construction Planning and Management
Pick up the correct statement from the following with regards to C.P.M. network analysis of projects

The latest occurrence time for the node at which the activity arrow terminates, is called latest finish time
The latest occurrence time of the node of which the activity arrow terminates minus the duration of the activity, is called latest start time
Earliest occurrence time of the event from which the activity arrow' originates, is called earliest start time of the activity
All listed here

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Construction Planning and Management
At a work site, statistical quality control of concrete means

Reduction in costs for the removal of defects
Reduction in wastage of inspection costs
Measurement of risks to eliminate failures
Applying the theory' of probability to sample testing or inspection

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