--- Julia, what were you doing when Anna called you?

--- I ________ my housework and was starting to take a bath.

A．had finished

B．have finished

C．were finishing

D．will finish

对电力系统设施或网架结构的静态和动态性能，或各种性能改进措施的效果是否满足规定的可靠性准则进行分析、预计和认定的系列工作，称为电力系统（）。

A.可靠性评价

B.可靠性评估

C.可靠性计算

D.可靠性统计