The ridge and the low are moving ______．

试卷相关题目

• 1Sailing 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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• 2A 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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• 3Your 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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• 4Deviation 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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• 5Magnetic heading differs from compass heading by_______．

  A.compass error

  B.true heading

  C.variation

  D.deviation

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• 6At noontime Tue the wind direction will be______．

  A.S

  B.NE

  C.NW

  D.SW

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• 7It is forecast for Wed that there will be ______．

  A.winds NE 20 to 30 knots

  B.winds SW 15 knots backing to SE 15 to 20

  C.winds NW 20 to 30 knots with occasional showers

  D.mod to strong S winds diminishing to light winds

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• 8On Tue afternoon, there will be ______．

  A.rain

  B.fog

  C.blue skies

  D.showers

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• 9______ are reprinted in the Annual Summary of Notices to Mariners.

  A.The Sailing Directions

  B.The corrections to Sailing Directions

  C.The effective corrections to Notices to Mariners

  D.The Weekly Edition

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• 10The parent book is ______．

  A.The Sailing Direction

  B.The corrections to Sailing Directions in force

  C.The Annual Summary of Notices to Mariners

  D.The Weekly Edition

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