● Project work packages are typically decomposed into smaller components called activities to provide a basis for （72）, scheduling, executing, and monitoring and controlling the project work.

● The Estimate Activity Resource process is closely coordinated with the （73）process.

● Estimating activity durations uses information on activity scope of （74）,required resource types, estimated resource quantities, and resource calendars.

●Developing the project schedule is often an iterative process. It determines the planned start and finish dates for project activities and milestones. Schedule development can require the review and revision of duration estimates and resource estimates to create an approved project schedule that can serve as a baseline to （75） progress.

● 某订单处理系统中，“创建新订单”和“更新订单”两个用例都需要检查客户的账号是否正确，为此定义一个通用的用例“核查客户账户”。用例“创建新订单”和“更新订单”与用例“核查客户账户”之间是 （1） 。

● UML的事物是对模型中最具有代表性的成分的抽象， （2） 是模型的静态部分，描述概念或物理元素； （3） 用来描述、说明和标注模型的任何元素。