单项选择题
Please fix some（）（货灯）.
A. hold lights B. cargo lights C. cargo lanterns D. hatch lamps
单项选择题 The（）(非包装货) is loaded and discharged by belt conveyer.
单项选择题 This is a（）（折叠）type hatch cover.
单项选择题 Sailors also keep （）（舷梯）watch.
