单项选择题

All the following are benefits of fast tracking a project EXCEPT ______ .

A．facilitates duration compression
B．reduces risk
C．ensure activities are done in parallel which would normally be done in sequence
D．helps shorten the project schedule without changing the project scope
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单项选择题
In your project, you realize the importance of determining the start and finish dates for project activities. If the project start or end dates are not realistic, then the project may not be completed on time. This is done as part of ______ .
A．activity sequencing
B．activity duration estimating
C．schedule development
D．activity definition
单项选择题
An activity has an optimistic estimate of 10 days, pessimistic estimate of 16 days, most likely estimate of 13 days. Assuming a normal distribution, what is the probability that the task will be completed within 10～16 days
A．99.99%.
B．99.73 Y0.
C．95.46%.
D．68.26%.
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