A.flux
B.poles
C.magnets
D.azimuth
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你可能感興趣的試題
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
A.variation
B.deviation
C.variation and deviation
D.a correction for the direction of current set
A.use the magnets one at a time，putting one in one side and then one on the opposite side，one step higher
B.use the magnets in pairs，starting at the top，with trays at the highest point of travel
C.use the magnets in pairs，from the bottom up，with the trays at the lowest point of travel
D.fill all the trays with magnets，then remove them one-by-one until the deviation is removed
A.before correcting for any deviation
B.after correcting for variation
C.after adjusting the fore-and-aft and athwartships permanent magnets
D.before the quadrantal correctors are placed on the compass
最新試題
Variation is a compass error that you（）.
When crossing the magnetic equator the（）.
By convention，the north seeking ends of a compass’ magnets are colored（）.
Variation in a compass is caused by（）.
What is the name of the movable，radial guide line used to measure direction on a radar?（）
When adjusting a magnetic compass for error，a deviation table should be made（）.
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?（）
When relieving the helm，the new helmsman should know the（）.
What is used to correct for both induced and permanent magnetism，and consequently must be readjusted with radical changes in latitude（）.