单项选择题
The height of coamings of hatchway above the exposed freeboard deck shall be at least()
A.900mm B.600mm C.760mm D.450mm
单项选择题 有关货船起居和服务处所及控制站的保护要求,以下说法正确的是()
多项选择题 The correct statements for survival craft muster station are:()
多项选择题 散货船的货舱、压载舱和干燥处所水位探测器有何具体要求?()