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
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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
A.in high latitudes
B.near the equator
C.on north or south headings
D.on intercardinal headings
最新試題
When adjusting a magnetic compass for error，a deviation table should be made（）.
Variation in a compass is caused by（）.
Which magnetic compass corrector（s）CANNOT be set on a heading of magnetic east or magnetic west（）.
What is the name of the movable，radial guide line used to measure direction on a radar?（）
This induced magnetism（）the permanent magnetism already present in the ship.
Variation is a compass error that you（）.
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.
The Flinders bar on a magnetic compass compensates for the（）.
When crossing the magnetic equator the（）.
The variation for most given areas undergoes（）change，the amount of which is also noted on charts.