历时估算是：（）

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:

The assigned values of risk for a project is best accomplished through a structured methodology that ensures all project elements are evaluated The project tool that is best suited for the structured analysis of the project risk is the:

网络供应商告诉项目经理，最近的这次地震会对关键零件的交付产生影响。于是团队成员开会讨论对项目整体造成的影响。讨论结果为：对人员培训无影响，对风险和成本管理有影响。但现在还不能确定是否对质量基准造成影响。项目团队正在做什么？

下列各项哪一项不是非正式书面沟通的例子（）