单项选择题
A.21人 B.23人 C.25人 D.37人
A.水密门要有船级社的产品证书 B.该道水密门应能在当地及遥控的位置开/关,并在各个操纵位置上有开/关的指示 C.在水密门上就注明“航行中关闭”,水密门的开启与关闭应在航行日志上记录 D.上述全部
A.Emergency lighting at every embarkation station on deck and over sides B.Emergency lighting at the storage positions for firemen’s outfits C.Fire and gas detection and their alarm system D.Power to operate the watertight doors and their indicators