A.elevation
B.magnetic angle
C.vertical angle
D.dip
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A.divisional parts
B.coefficients
C.fractional parts
D.equations
A.compass error
B.latitude
C.variation
D.deviation
A.precession
B.earth rate
C.gyroscopic inertia
D.gravity effect
A.remove deviation on the intercardinal headings
B.remove deviation on the cardinal compass headings
C.remove heeling error
D.compensate for induced magnetism in vertical soft iron
A.reduce the variation as much as possible
B.reduce the deviation as much as possible
C.reduce the magnetic dip as much as possible
D.allow the compass bowl to swing freely on its gimbals
最新試題
Which magnetic compass corrector（s）can be set while the vessel is on a heading of magnetic north or magnetic south（）.
When adjusting a magnetic compass for error，a deviation table should be made（）.
What is the basic principle of the magnetic compass（）.
What is an advantage of the magnetic compass aboard vessels?（）
The Flinders bar on a magnetic compass compensates for the（）.
What are the only magnetic compass correctors that correct for both permanent and induced effects of magnetism?（）
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 variation for most given areas undergoes（）change，the amount of which is also noted on charts.
The Flinders bar and the quadrantal spheres should be tested for permanent magnetism at what interval（）.
What is used to correct for both induced and permanent magnetism，and consequently must be readjusted with radical changes in latitude（）.