单选题 Which of the following are the most commonly used performance measures of evaluating whether or not work is being accomplished as planned at any given point of time?

A、 PV & A
B、 AC，EV & P
C、 CV & S
D、 SPI，EV & A

【正确答案】 B

【答案解析】[解析] 下列哪项常用来衡量项目的工作是否在特定时间点按原计划完成? A) PV和AC。 B) AC，EV和PV。 C) CV和SV。 D) SPI，EV和AC。通过EV、PV和AC这三个数值可以计算CV、SV。