A wind vane on a moving vessel shows ______.

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• 1Vessels in port may use ______ for receiving typhoon warnings during the typhoon season．

  A.their transmitters

  B.their receivers

  C.their radars

  D.their GPS

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• 2From ______ the mariner can know the data of tide．

  A.the Sea Pilot

  B.the Cargo Plan

  C.the Tide Table

  D.the Port List

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• 3There shall be two principal ______ through the harbor for the passage of vessels．

  A.straits

  B.channels

  C.canals

  D.roadsteads

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• 4Information on shipping movements can be ______ by radio from Dover Port Control．

  A.got

  B.made

  C.obtained

  D.taken

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• 5A twin screw vessel，making headway with both engines turning ahead，will turn more readily to starboard if you ______.

  A.reverse port engine，apply right rudder

  B.reverse port engine，rudder amidships

  C.reverse starboard engine，apply right rudder

  D.reverse starboard engine，rudder amidships

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• 6In the doldrums(赤道无风带) you can expect ______.

  A.steady，constant winds

  B.frequent rain showers and thunderstorms

  C.steep pressure gradients

  D.low relative humidity

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• 7A cloud sequence of cirrus，cirrostratus，and altostratus clouds followed by rain usually signifies the approach of a(n) ______.

  A.occluded front

  B.stationary front

  C.warm front

  D.cold front

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• 8When warm moist air is blown over a colder surface, ______ will happen.

  A.advection fog

  B.radiation fog

  C.dense fog

  D.steam fog

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• 9In Beaufort Scale，the wind force 7 with speed of 28-33 knots is defined as ______ .

  A.Moderate gale

  B.Near gale

  C.Strong gale

  D.Whole gale

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• 10The Admiralty Notices to Mariners can be obtained ______ by Masters of vessels from any Admiralty Chart Agent．

  A.free of charge

  B.with no responsibility

  C.without limitations of distribution

  D.with little charges

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