Plain language is usually used on marine weather ______．

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• 1Vessels are warned ______ in the area enclosed by pecked lines owing to the existence of numerous telegraph cables．

  A.anchor

  B.to anchor

  C.not to anchor

  D.not to anchoring

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• 2I have steerage way．It is said that ______．

  A.I am underway

  B.I am out of control

  C.I am not making way through the water

  D.I have the amount of movement forward which the ship needs to be steered properly

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• 3In relation to the turning circle of a ship，the term advance means the distance ______．

  A.gained at right angles to the original course

  B.gained in the direction of the original course

  C.moved sidewise from the original course when the rudder is first put over

  D.around the circumference of the turning circle

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• 4For working details ______ Admiralty list of Radio Signal

  A.refer

  B.see

  C.watch

  D.look

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• 5Every ship should hoist ______ when approaching and entering ports．

  A.its flashing light

  B.the ship's name

  C.its identification

  D.its signal letters

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• 6As the temperature of an air mass decreases，the ______．

  A.absolute humidity（湿度） decreases

  B.relative humidity increases

  C.specific humidity decreases

  D.dew point rises

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• 7In the Northern Hemisphere，gusty winds shifting clockwise，a rapid drop in temperature，thunderstorms or rain squalls in summer (frequent rain/snow squalls in winter) then a rise in pressure followed by clearing skies，indicate the passage of a(n) ______

  A.warm front

  B.tropical cyclone

  C.anticyclone

  D.cold front

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• 8A generally circular low pressure area is called a(n) ______．

  A.cyclone

  B.anticyclone

  C.cold front

  D.occluded front

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• 9LOW AT 34N 135E ESLY SLWLY INTST NC.This description is most likely to be under the heading of ______．

  A.GL WNG

  B.GEN SYN

  C.STM WNG

  D.T Y WNG

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• 10MAINLY GOOD BECOMING MODERATE．This forecast probably refers to ______ in a certain area．

  A.visibility

  B.winds

  C.sea

  D.fog

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