某项目的主要约束是质量，为了不让该项目的项目团队感觉时间过于紧张，项目经理在估算项目活动历时的时候应采用（），以避免进度风险。

单项选择题以下不具有 完成-开始 关系的两个活动是（）。

A.系统设计，设计评审 
B.系统分析，需求评审 
C.需求评审，周例会 
D.确定项目范围，制定WBS 

单项选择题某软件公司欲开发一个图像处理系统，在项目初期开发人员对需求并不确定的情况下，采用（）方法比较合适。

A.瀑布式 
B.快速原型 
C.协同开发 
D.形式化

单项选择题Many of the activities performed during the preliminary investigation are still being conducted in（1）,but in much greater depth than before. During this phase, the analyst must become fully aware of the（2）and must develop enough knowledge about the（3）and the existing systems to enable an effective solution to be proposed and implemented. Besides the（4）for process and data of current system, the deliverable from this phase also includes the（5）for the proposed system.

A. hardware and software specification
B. system performance specification
C. formal requirements definition
D. general problem statement

单项选择题Many of the activities performed during the preliminary investigation are still being conducted in（1）,but in much greater depth than before. During this phase, the analyst must become fully aware of the（2）and must develop enough knowledge about the（3）and the existing systems to enable an effective solution to be proposed and implemented. Besides the（4）for process and data of current system, the deliverable from this phase also includes the（5）for the proposed system.

A.logical models 
B.physical models 
C.design models 
D.implementation models

单项选择题超出项目经理控制的成本增加因素，除了存款利率、贷款利息和税率外，还包括（）。

A．项目日常开支的速度和生产率 
B．项目日常开支的速度和工期拖延 
C．项目补贴和加班 
D．原材料成本和运输成本