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航海英语航海仪器单项选择题每日一练(2018.09.02)

  • 单项选择题

    Deviation in a compass is caused by the().

    A.vessel's geographic position
    B.vessel's heading
    C.earth's magnetic field
    D.influence of the magnetic materials of the vessel

  • 单项选择题

    When crossing the magnetic equator the().

    A.Flinders bar should be inverted
    B.Heeling magnet should be inverted
    C.The quadrantal spheres should be rotated 180°
    D.Flinders bar should be moved to the opposite side of the binnacle

  • 单项选择题

    My radar is not working.I require shore based radar assistance.Is shore based radar assistance()?

    A.used
    B.available
    C.in use
    D.can be used

  • 单项选择题

    The magnetism in the various structures of a ship changing as a result of cruising,vibration,or aging is termed().

    A.permanent magnetism
    B.subpermanent magnetism
    C.induced magnetism
    D.variable magnetism

  • 单项选择题

    Deviation in a compass is caused by the().

    A.vessel's geographic position
    B.vessel's heading
    C.earth's magnetic field
    D.influence of the magnetic materials of the vessel

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