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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(轮机专业) > 轮机英语 > 船舶电气与船舶安全

单项选择题

During inspection of the machinery space, which of the following statements points to an unsatisfactory organization of the systematic maintenance?()

    A.missing valve hand wheels
    B.dirty tank tops
    C.a large number of temporary repairs
    D.All of the above

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