单项选择题
A. Sailors often maintain the derrick. B. Sailors often maintain the winch. C. Sailors often maintain the windlass. D.Sailors often maintain the machine.
我经常在艏楼做一些修理工作。（）A. I usually keep watch on the bridge.B...
单项选择题我经常在艏楼做一些修理工作。（）
A. I usually keep watch on the bridge. B. I often do some repair work on the forecastle. C. I often paint on deck. D. I often do some repair work on the bridge.
把防鼠挡装在系泊缆上。（）A. Put rat guard on the deck.B. Put rat gu...
单项选择题把防鼠挡装在系泊缆上。（）
A. Put rat guard on the deck. B. Put rat guards on the moorings. C. Put rat guard under the moorings. D. Put rat guards under the moorings.
我们必须仔细使用每件工具并且用完后归还。（）A. We must use all kinds of tools...
单项选择题我们必须仔细使用每件工具并且用完后归还。（）
A. We must use all kinds of tools carefully and return it after using. B. We must use every tool carefully and return it after using. C. A+B D. We must use everything carefully and keep it after using.
