A.follow-up system
B.transmitter
C.phantom element
D.azimuth motor
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A.east
B.west
C.north
D.south
A.The readings are too low (small numerically) and the amount of the error must be added to the compass to obtain true
B.The readings are too low and the amount of the error must be subtracted from the compass to obtain true
C.The readings are too high (large numerically) and the amount of the error must be added to the compass to obtain true
D.The readings are too high and the amount of the error must be subtracted from the compass to obtain true
A.the deviation has been offset by the variation
B.there is something wrong with the compass
C.the compass is being influenced by nearby metals
D.there is no deviation on that heading
A.Compass error and variation are equal
B.Compass north will be true north
C.Variation will equal deviation
D.There will be no compass error
最新試題
When adjusting a magnetic compass using the fore-and-aft permanent magnets，you should（）.
This induced magnetism（）the permanent magnetism already present in the ship.
Which statement about the Flinders bar of the magnetic compass is CORRECT（）.
What is the basic principle of the magnetic compass（）.
Which compensates for errors introduced when the vessel heels over（）.
In more recent years，（）has been used by civilians in many new ways to determine positions，such as in automobile and boat navigation，hiking，emergency rescue，and precision agriculture and mining.
Which magnetic compass corrector（s）can be set while the vessel is on a heading of magnetic north or magnetic south（）.
Variation is a compass error that you（）.
When adjusting a magnetic compass for error，a deviation table should be made（）.
What is an advantage of the magnetic compass aboard vessels?（）