Not only ______ prepare lunch for us, but also _______ clothes for us.

A．he did , he washed

B．he did , did he wash

C．did he , he washed

D．did he, did he wash

分油机日常检查中对分油盆主要检查（）。

A.是否泄漏

B.是否存在异常振动和噪声

C.是否过热

D.盆叠的压力如何