You must rig gangway combined()pilot ladder.
A、in
B、on
C、at
D、with
A、in
B、on
C、at
D、with
A、On which side must I rig the pilot ladder? B、On which side do you want the ladder rigged? C、On what side must I rig the pilot ladder? D、On which side do you want the gangway rigged?
A、A.being rigged combined B、B.is rigged combining C、C.rigs combining D、D.is rigged combined
A、A. a gangway B、B. a pilot ladder C、C. rope ladder D、D. gangway combined with pilot ladder