[单选题]Performing（）involves monitoring specific project results to determine if they comply with relevant quality standards and identifying ways to eliminate causes of unsatisfactory results.

正确答案 ：D

quality control

解析：该题的关键词为"monitoring specific project results. comply with relevant qualitystandards. eliminate causes ofunsatisfactory results"，其语句结构为"Performing______（主语）involves（谓语）monitoring specific project results"，含义为"执行什么包括监督特定的项目结果"，再结合关键词分析，正是质量控制的特征，应该选择选项D。

[单选题]Estimating schedule activity costs involves developing an (1) of the cost of theresources needed to complete each schedule activity. Cost estimating includes identifying and considering various costing alternatives. for example, in most application areas, additionalwork 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 estimates are generally expressed in units of (2) to facilitate comparisons both within and across projects.the (3) describes important information about project requirement that is considered during cost estimating.

正确答案 ：

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