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全部科目 > 水路交通运输技能考试 > 海船船员考试 > 船舶管理(驾驶专业) > 航海英语 > 国际公约 > MARPOL公约的有关内容

单项选择题

Which statement is TRUE concerning protection of double bottom tanks against excessive pressure? ()

    A.Each vent for the tank must be equal to the area of the tank filling line
    B.The tanks must be protected by overflows
    C.The total area of the vents or the overflow shall be at least equal to the area of the fill line
    D.There must be twice as much vent area as the area of the fill line

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