A manufacturing project has a schedule per

问题单项选择题

A manufacturing project has a schedule performance index(SPI)of 0.89 and a cost performance index(CPI)of 0.91．Generally，what is the BEST explanation for why this occurred ？（）

A．The scope was change

B．A supplier went out of business and a new one needed to be foun

C．Additional equipment needed to be purchase

D．A critical path activity took longer and needed more labor hours to complet

答案

参考答案：D

解析：

某个制造项目的进度绩效指数(SPI)是0.89；成本绩效指数(CPI)是0.91。一般而言，对这种情况出现的最好的解释是 A) 范围变更。 B) 供应商歇业，需要找新的。 C) 额外的设备需要采购。 D) 关键路径的活动太长，需要更多劳动力时间来完成。当SPI和CPI比较接近时，可能是由一个原因引起的——投入资源不足。