--- What did the teacher say to you just now?

--- She asked me _______________.

A．whether I had finished my work

B．if had I finished my work

C．that I had finished my work

D．how long had I finished my work

CFM56-3发动机的航线拆装是主要通过什么工装来实现的（）

A.外部吊车

B.内部吊车

C.自动吊架

D.安装在发动吊架的吊架装置