【单项选择题】
水手经常保养锚机。（）
A、A. Sailors often maintain the derrick.
B、B. Sailors often maintain the winch.
C、C. Sailors often maintain the windlass.
D、D.Sailors often maintain the machine.
查看正确答案
A、A. Sailors often maintain the derrick.
B、B. Sailors often maintain the winch.
C、C. Sailors often maintain the windlass.
D、D.Sailors often maintain the machine.
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