其他其他其他2006年第1期海船船员适任证书全国统考试题（总第39期）

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• 61The system will accept a harbor map which is incorrect，therefore the operator must exercise caution in harbor selection．

  A.be considered

  B.be prudent

  C.be bold enough

  D.be carelessness

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• 62Defense plans may cause the operation of electronic aids to navigation to be suspended with ______．

  A.no notice

  B.one day's notice

  C.a week's notice

  D.thirty days notice

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• 63A correction for augmentation is included in the Nautical Almanac corrections for ______．

  A.the Sun

  B.the Moon

  C.Venus

  D.None of the above

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• 64Magnetic heading differs from compass heading by_______．

  A.compass error

  B.true heading

  C.variation

  D.deviation

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• 65Deviation is caused by ______．

  A.changes in the earth's magnetic field

  B.nearby magnetic land masses or mineral deposits

  C.magnetic influence inherent to that particular vessel

  D.the magnetic lines of force not coinciding with the lines of longitude

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• 66Your vessel is at anchor in fog while in international waters． The fog signal of another vessel，apparently underway，has been steadily growing louder and the danger of collision appears to exist．In addition to the normal fog signal，what signal may be used to indicate the presence of your vessel？______．

  A.The danger signal； five or more short and rapid blasts on the whistle

  B.Three blasts on the whistle； one short，one prolonged and one short

  C.Three blasts on the whistle； one prolonged followed by two short

  D.No special signal other than the normal fog signal

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• 67A vessel trawling would display ______．

  A.a black ball

  B.a basket

  C.a double cone，point to point

  D.none of the above

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• 68Sailing vessels are stand-on over power-driven vessels except ______．

  A.in a crossing situation

  B.in a meeting situation

  C.when they are the overtaking vessel

  D.on the inland waters of the PR China

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• 69The ridge and the low are moving ______．

  A.in some direction

  B.in opposite direction

  C.to SE and NW respectively

  D.too fast in the day that marine interests are advised that freezing spray warnings are continued for Belle Isle

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• 70At noontime Tue the wind direction will be______．

  A.S

  B.NE

  C.NW

  D.SW

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