— Do you want me to wash your clothes?

— _____. [ ]

A. Sounds great Why not?

B. Thank you, but I can manage it.

C. I couldn't agree more.

D. They are not dirty at all.

航行试验中，倒车试验转速应为正常额定转速的（）%，并能保持连续运转15分钟。

A.60

B.65

C.70

D.75