The project manager is developing a project schedule. The project manager negotiated with all the execution organizations， and the task times are as short as possible. After manipulating the schedule， the project completion date is still beyond the date requested by the business owners of the project. The project manager believes that the content agreed on for the project is appropriate， and concludes that this schedule should be taken to the business owners and renegotiated. Which one of the following tools will help the project manager justify the revised schedule？（）

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

单项选择题WithinInformationTechnologyprojects，communicationsbetweentheprojectmanagerandtheprojectteammembersshouldtakeplace：（）

A.by written and oral communication.
B.via a weekly status report.
C.through the formal chain of command.
D.with approved template forms.

单项选择题Whatisareasonforreviewingtheuserrequirementsdocumentwiththeclient？（）

A.To gain the client’s acceptance of the detailed design
B.To verify mutual understanding of project resources
C.To verify mutual understanding of the detailed project plan
D.To verify mutual understanding of targeted product performance
E.To verify mutual understanding of the tests that will be done after the product is completed

单项选择题TheSOW（StatementofWork）isanothernameforthe：（）

A.WBS （Work Breakdown Structure）.
B.cost benefit analysis.
C.requirements specifications.
D.narrative description of the work to be accomplished.

单项选择题AsaruleofthumbforQA（QualityAssurance）activities，howmanyhoursofdownstreamQA（QualityAssurance）costsaresavedforeachhourspentontechnicalreviewsearlyintheproject？（）

A.Up to 5
B.Up to 10
C.Up to 15
D.Up to 20