151 Sources for data on activity durations and resource requirements can be gathered from which of the following:A. Past project records (historical data)B. Commercial techniques (standard practices, rules of thumb)C. Past project team members knowledge (
题目
151 Sources for data on activity durations and resource requirements can be gathered from which of the following:
A. Past project records (historical data)
B. Commercial techniques (standard practices, rules of thumb)
C. Past project team members knowledge (experience, oldtimers)
D. All of the above
E. A and C only