单项选择题
The cargo gear includes（）.
A. derrick, winches, cargo ropes and wires B. derricks, windlass, capstan C. hatch covers, derricks, windlass D. cranes, hatches, lashing wires
单项选择题 The derrick can’t be（）.
单项选择题 Could you show me （）to operate the derrick?
单项选择题 Be careful when you （）the derrick.
