----How about playing football,Steve?

----____________.

A．I think so

B．That sounds great

C．You are welcome

D．Here you are

冷风机启动前，应检查的内容包括（）。

A.叶片及防护罩是否完整

B.转动是否轻快

C.叶片与风筒、外壳有无摩擦

D.电动机传动机构是否良好