The role of each stakeholder is determined by:

以下各项中，哪项不是项目筛选得益评估方法的实例？（）

向高层管理人员作月度进度报告的合适方式是什么（）

外部质量保证成本包括()。

A new project manager is planning a complex hardware installation project. The team consists of 15 people who are experts in their fields. The project manager does not want to manage the project in the detailed level. How far should he decompose the work？