单项选择题

PERT means ______ .

A．program evaluation and review tech
B．project evaluation and review tech
C．project estimate and review tech
D．program estimate and review tech
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单项选择题
The schedule control process for a project ______ .
A．focuses on starting the project earlier than scheduled
B．is necessary for controlling changes to the project schedule
C．is concerned only with activities that are on the critical path
D．should focus entirely on activities that are difficult to carry out
单项选择题
Both the CPM and PERT methods assume that estimated activity durations are ______ .
A．statistically dependent
B．mean distributed
C．standard distributed
D．statistically independent
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