A.Induced magnetism in vertical soft iron
B.Induced magnetism in horizontal soft iron
C.Permanent magnetism in ship's steel
D.Vessel's inclination from the vertical
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A.GPS
B.GMDSS
C.AIS
D.Navtex
A.Black
B.Blue
C.Red
D.White
A.flux
B.poles
C.magnets
D.azimuth
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.If the blue ends of the magnets are aft you should lower the fore-and-aft tray
C.If the blue ends of the magnets are aft，and the fore-and-aft tray is at the top，you should reverse the magnets
D.If the blue ends of the magnets are forward，and the fore-and-aft tray is at the bottom，you should add some magnets
A.hammering and jarring
B.vibration and pounding
C.varying magnetic fields
D.stable or permanent magnetism of the ship
最新試題
Variation in a compass is caused by（）.
Which compensates for errors introduced when the vessel heels over（）.
Variation is the angular measurement between（）.
What is the basic principle of the magnetic compass（）.
The magnetism in the various structures of a ship changing as a result of cruising，vibration，or aging is termed（）.
Which statement about the gyrocompass is FALSE（）.
When a vessel changes course from one cardinal heading to another cardinal heading whilea djusting the compass，which action should be taken?（）
What are the only magnetic compass correctors that correct for both permanent and induced effects of magnetism?（）
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（）.
When crossing the magnetic equator the（）.