重要的项目干系人质疑项目基准的有效性，经过长时间讨论，仍然无法达成一致。项目经理应该如何做？()

项目经理正在确定哪些因素会影响特定的质量变量，并选择对不同的颜色和尺寸组合进行分析，确定哪种组合最能够促成新产品的功能。项目经理目前正处于质量管理过程的哪个步骤？()

The construction phase of a new software product is near completion .The next phase is testing and implementation. The project is two weeks ahead of schedule. What should the project manager be MOST concerned with before moving onto the final phase？

Decomposition belongs to develop the technology used in the following document？

项目变更的三大起因是：（）