试题2（2005年上半年试题69～71）
Estimating schedule activity costs involves developing an （69） of the cost of the resources needed to complete each schedule activity．Cost estimating includes identifying and considering various costing alternatives．For example，in mostapplication areas，additional work during a design phase is widely held to have the potential for reducing the cost of the execution phase and product operations．The cost estimating process considers whether the expected savings can offset the cost of the additional design work．Cost estmates are generally expressed in units of （70） to facilitate comparisions both within and across projects．The （71） describes important information about project requirement that is considered during cost estimating．
（69）A．accuracy
B．approxination
C．specification
D．summary
（70）A．activity
B．work
C．currency
D．time
（71）A．project scope statement
B．statement of work
C．project management plan
D．project policy
试题2分析
估算计划活动的成本涉及估算完成每项计划活动所需资源的近似成本。成本估算包括识别和考虑各种成本计算方案。例如，在大多数的应用领域中，普遍在设计阶段多做些额外工作以降低执行阶段和产品运行时的潜在成本。成本估算过程考虑预期的成本节省是否能够弥补额外设计工作的成本。成本估算一般以货币单位表示，以利于在项目内和项目间进行比较。项目范围说明书描述了项目的需求的重要信息，这些信息在成本估算时必须考虑。
试题2答案
（69）B
（70）C
（71）A
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