22.—Boy, ____________

　—It is, looks like spring is coming soon.

　—Yeh, It'll just be a few more weeks.

A．it's really a nice day today, isn't it?

B．what knid of weather are we going to have today?

C．do you think it is going to rain today?

D．what' it like outside today?

小型发动机中润滑气缸壁和活塞、活塞销等零件的主要方法是飞溅润滑。