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The most accurate method of determining gyrocompass error while underway is by ______．A.Co

The most accurate method of determining gyrocompass error while underway is by ______．

A.Comparing the gyro azimuth of a celestial body with the computed azimuth of the body

B.Comparing the gyro heading with the magnetic compass heading

C.Determining from the chart the course made good between celestial fixes

D.It cannot be determined accurately at sea due to drift of unknown currents

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更多“The most accurate method of de…”相关的问题

第1题

This induced magnetism ______ the permanent magnetism already present in the ship．

A.will add to

B.will subtract from

C.may add to or subtract from

D.will not change

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第2题

What is used to correct for both induced and permanent magnetism，and consequently must be readjusted with radical changes in latitude ________．

A.Flinders bar

B.Soft iron spheres

C.Fore-and-aft permanent magnets in their trays

D.Heeling magnet

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第3题

When a vessel changes course from one cardinal heading to another cardinal heading while adjusting the compass，which action should be taken ________．

A.The course change should be made rapidly to prevent transient induced magnetism while passing the intercardinal headings

B.After the new heading is reached，the vessel should steam on that course for at least two minutes before the adjustment

C.During the course change，you should gently tap the compass to remove any error caused by friction on the pivot bearing

D.After steadying on the new heading，the compass card should be slewed by a magnet and allowed to oscillate freely to remove any gaussin error

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第4题

When crossing the magnetic equator the ______．

A.Flinders bar should be inverted

B.Heeling magnet should be inverted

C.The quadrantal spheres should be rotated 180°

D.Flinders bar should be moved to the opposite side of the binnacle

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