While completing a project a project manager realizes be needs to decrease project costs. After researching his options, he comes up with the following choices. Which choice would DECREASE project costs ？（）
A．Change to component A from component Component A costs more to purchase but has a lower life cycle cost than
B．Change task A to be completed by resource B instead of Resource C, Resource B is a more experienced worke
C．Move tasks B and H to occur concurrently, and take the risk of a 30% increase in the need for five more resources late
D．Remove a test from the project pla
参考答案：D
解析：
在执行一个项目时, 项目经理认识到他需要降低项目成本。在寻找了可能的方法之后, 他列出了如下选择, 其中哪一项能降低项目成本 A) 用部件A代替部件B。部件A购买成本高但是生命周期成本低。 B) 用资源B替代资源C完成任务A, 资源B更有经验。 C) 移动任务B和H使它们同时执行, 这会让随后的工作中需要增加5个资源的风险概率提高30%。 D) 从项目计划中移除测试工作。 找把握最大的。减少工作等于缩减范围，肯定能降低项目成本；选项A虽然整个生命期成本低，但对项目而言成本高；选项B会导致成本上升；选项C，风险会花费成本。