单项选择题
As a rule of thumb for QA （Quality Assurance） activities， how many hours of downstream QA （Quality Assurance） costs are saved for each hour spent on technical reviews early in the project？（）
A.Up to 5 B.Up to 10 C.Up to 15 D.Up to 20
单项选择题 Whichofthefollowingtechniquesisusedfortrackingtheprojectrisks？（）
单项选择题 WhichistheMOSTeffectivemethodforgeneratingsupportforyourprojectplan？（）
单项选择题 Whichfactorhasthegreatestimpactontheestimatedperunitlaborcostforaproject？（）
