单项选择题

Why does a project manager need an executive sponsor？（）

A.To keep the project team focused on its work
B.To provide behind-the-scenes assistance with organizational commitment and support
C.To sign-off on user requirements
D.To negotiate contracts with outside vendors

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单项选择题

Theprojectmanagerisdevelopingaprojectschedule.Theprojectmanagernegotiatedwithalltheexecutionorganizations，andthetasktimesareasshortaspossible.Aftermanipulatingtheschedule，theprojectcompletiondateisstillbeyondthedaterequestedbythebusinessownersoftheproject.Theprojectmanagerbelievesthatthecontentagreedonfortheprojectisappropriate，andconcludesthatthisscheduleshouldbetakentothebusinessownersandrenegotiated.Whichoneofthefollowingtoolswillhelptheprojectmanagerjustifytherevisedschedule？（）

A.Data flow model
B.The project critical path
C.Resource loading chart
D.WBS （Work Breakdown Structure）

单项选择题

WhatistheMOSTaccuratewaytodetermineaproject’sdurationbeforeexecution？（）

A.The project manager performs all estimates
B.Incorporate each individual worker’s estimates
C.Acquire expert estimates
D.There is no way to determine the duration