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
Variation is the angular measurement between（）.
While in drydock your vessel will be belt-gauged.This process involves（）.
The Flinders bar on a magnetic compass compensates for the（）.
Which magnetic compass corrector（s）can be set while the vessel is on a heading of magnetic north or magnetic south（）.
What is the basic principle of the magnetic compass（）.
Variation in a compass is caused by（）.
The variation for most given areas undergoes（）change，the amount of which is also noted on charts.
A ship under construction or major repair will acquire permanent magnetism due to（）while sitting stationary in the earth’s magnetic field.
When adjusting a magnetic compass using the fore-and-aft permanent magnets，you should（）.
What are the only magnetic compass correctors that correct for both permanent and induced effects of magnetism?（）