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单选题
Magnetic heading differs from compass heading by（）.
A
compass error
B
true heading
C
variation
D
deviation
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单选题The difference between magnetic heading and compass heading is called（）.A
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单选题If the magnetic heading is greater than the compass heading，the deviation is（）.A
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单选题If the compass heading and the magnetic heading are the same then（）.A
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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
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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
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Raise or lower the athwartship magnets
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单选题A vessel is heading magnetic east and its magnetic compass indicates a heading of 086°. Which action should be taken to remove this error during compass adjustment?（）A
If the blue ends of the magnets are aft，and the fore-and-aft tray is at the top，you should add some magnets.B
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考题
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单选题Magnetic dip is a measurement of the angle between the（）.A
geographic pole and the magnetic poleB
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考题
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Comparing the gyro azimuth of a celestial body with the computed azimuth of the bodyB
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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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单选题Compass error is equal to the（）.A
deviation minus variationB
variation plus compass courseC
combined variation and deviationD
difference between true and magnetic heading
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