单项选择题
A.登船证B.作业证C.资格证D.健康证
A.Declaration of SecurityB.Safety LetterC.Discharging ProcedureD.Confirmation Notice Before Arrival
A.高温B.低温C.潮湿D.干燥
A.5cm/s,3度B.8m/s,4度C.10cm/s,5度D.15cm/s,6度
微信扫一扫,加关注免费搜题