A.variation
B.deviation
C.compass error
D.bearing error
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A.increases with latitude，being maximum at the geographic poles
B.decreases with latitude，being maximum at the geographic equator
C.is greatest when a vessel is near the Earth's magnetic equator
D.remains the same at all latitudes
A.variation
B.deviation
C.compass error
D.drift
A.compass error
B.variation
C.magnetic dip
D.deviation
A.zero
B.equal to variation
C.eliminated by adjusting the compass
D.constant at any geographical location
A.geographical position
B.speed
C.heading
D.longitude
最新試題
While in drydock your vessel will be belt-gauged.This process involves（）.
The Flinders bar on a magnetic compass compensates for the（）.
When relieving the helm，the new helmsman should know the（）.
Variation in a compass is caused by（）.
What is used to correct for both induced and permanent magnetism，and consequently must be readjusted with radical changes in latitude（）.
Which statement about the gyrocompass is FALSE（）.
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.
What is the basic principle of the magnetic compass?（）
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?（）