A、exclusion of all sand and solid matter
B、cleaning with clean fresh or sea water
C、examination for fractures and pitting
D、All of the above
A、exclusion of all sand and solid matter
B、cleaning with clean fresh or sea water
C、examination for fractures and pitting
D、All of the above
时间:2022-01-01 12:36 关键词: 液化气体与IGC规则 水路交通运输技能考试 海船船员考试
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