My sister is _______ in the ______story.

A．interested, interesting

B．interesting, interested

C．interesting, interest

D．interest, interested

对泵体的完好要求是（）。

A.密封性能良好，不漏油

B.运转时无异常振动

C.润滑油质符合规定，保持清洁

D.泵体卫生，涂漆完整无锈蚀