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单选题
The compass heading of a vessel differs from the true heading by（）.
A
compass error
B
variation
C
magnetic dip
D
deviation
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单选题The difference between magnetic heading and compass heading is called（）.A
variationB
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compass errorD
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deviationB
variationC
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单选题Magnetic heading differs from compass heading by（）.A
compass errorB
true headingC
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单选题If the magnetic heading is greater than the compass heading，the deviation is（）.A
eastB
westC
northD
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单选题If the compass heading and the magnetic heading are the same then（）.A
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there is something wrong with the compassC
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单选题The standard magnetic compass heading differs from the true heading by（）.A
compass errorB
latitudeC
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单选题The lubber’s line of a magnetic compass（）.A
always shows true north directionB
indicates the vessel's headingC
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单选题A vessel is heading magnetic northwest and its magnetic compass indicates a heading of 312°. What action should be taken to remove this error during compass adjustment? （）A
If the quadrantal spheres are all the way out，replace them with smaller spheresB
If the quadrantal spheres are all the way in，replace them with larger spheresC
If the quadrantal spheres are all of the way out，move the spheres inD
If the quadrantal spheres are all the way out，replace them with larger spheres.
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单选题When a vessel changes course from one cardinal heading to another cardinal heading whilea djusting the compass，which action should be taken?（）A
The course change should be made rapidly to prevent transient induced magnetism while passing the intercardinal headingsB
After the new heading is reached，the vessel should steam on that course for at least two minutes before the adjustmentC
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考题
单选题A vessel is heading magnetic north and its magnetic compass indicates a heading of 003°. What action should be taken to remove this error during compass adjustment? （）A
Move the quadrantal spheres closer to the compassB
Raise the heeling magnet if the red end is upC
Remove some of the Flinders barD
Raise or lower the athwartship magnets
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单选题A vessel is heading magnetic northwest and its magnetic compass indicates a heading of 317°. What action should be taken to remove this error during compass adjustment? （）A
If the quadrantal spheres are out as far as possible replace them with smaller spheresB
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单选题Which magnetic compass corrector（s）can be set while the vessel is on a heading of magnetic north or magnetic south（）.A
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考题
单选题The heading of a vessel is indicated by what part of the compass? （）A
CardB
NeedleC
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考题
单选题（）refers to the angle between true North and heading line of the vessel.A
True positionB
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单选题Leeway is the（）.A
difference between the true course and the compass courseB
momentum of a vessel after her engines have been stoppedC
lateral movement of a vessel downwind of her intended courseD
displa ement of a vessel multiplied by her speed
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单选题To center a compass bowl in its binnacle，you should have the ship on an even keel，heading north or south，and adjust the screws until（）.A
the compass heading is in line with the lubber's lineB
there is no lost motion in the gimbal ringsC
no change of heading by compass is observed if you raise and lower the heeling magnetD
the gimbal rings do not strike the compass frame when they are tilted
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variation plus compass courseC
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difference between the true course and the compass courseB
momentum of a vessel after her engines have been stoppedC
lateral movement of a vessel downwind of her intended courseD
displacement of a vessel multiplied by her speed
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