以下各项中，哪项不是项目筛选得益评估方法的实例？（）

根据动机的期望理论()。

Management tells a project manager to subcontract part of the project to a company that management has worked with many times . Under these circumstances, the project manager should be MOST concerned about:

以下哪个是外包风险的例子： （）

进行估算活动持续时间时不应考虑以下哪一项？()