应用在统计过程中控制表中的“7的规则”的意思是（）

项目干系人管理的主要目标是()。

A project team has completed all the technical project deliverables, and the customer has accepted the deliverables . However, the lessons learned required by the project office have not been completed . What is the status of the project？

应该由谁负责确定项目成本偏差可接受幅度（）

项目经理用在沟通上的时间占多少（）