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全部科目 > 水路交通运输技能考试 > 注册验船师 > 注册验船师A级

单项选择题

With reference to the requirements under IMO MODU CODE,Space in which an explosive gas/air mixture is likely to occur in normal operation of Drilling Units is considered as().

    A.Zone0
    B.Zone1
    C.Zone2
    D.Zone3

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