单项选择题
Please have the damaged derrick （）.
A.painted B.repaired C.brushed D.derusted
单项选择题 Which hold will be the first to be finished, Bosun? （）
单项选择题 Do you want the derrick adjusted upwards or downwards? （）
单项选择题 Bosun, I’ve never operated the hatch covers （）by hydraulic power.
