The concept of standard deviation is important in risk analysis since standard deviation measures an estimate’s variability. Therefore, the _______ the standard deviation of an estimate, the _______ its variability and risk.

运营和维护工作().

每个项目阶段都 以此阶段一个或几个交付成果来显示一个项目的设计阶段的可交付成果是 （）

You have just finished most of the work on a new system integration project when the seller comes to you with detailed procedures for close out of the contract.The contract included closeout procedures.What should the project manager do？

项目经理可能意识到不能满足某些合同条款和项目目标，要达到某些规范既费成本又花时间。这时项目出现风险可能性较高，同客户协商降低风险可能性这种手段： （）