A.north magnetic pole
B.south magnetic pole
C.magnetic prime vertical meridian
D.magnetic equator
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A.compass north
B.the direction of the vessel's head
C.magnetic north
D.a relative bearing taken with an azimuth circle
A.always shows true north direction
B.indicates the vessel's heading
C.is always parallel to the vessel's transom
D.is located on the compass card
A.deviation
B.variation
C.compass error
D.dip
A.damping error
B.ballistic deflection
C.quadrantal error
D.speed error
A.needles are nearly in line with the meridian
B.vessel is near the magnetic poles
C.variation is near zero
D.vessel is near the magnetic equator
最新試題
When a magnetic compass is not in use for a prolonged period of time it should（）.
While in drydock your vessel will be belt-gauged.This process involves（）.
The MOST important feature of the material used for making the binnacle of a standard magnetic compass is that it is（）.
What is the basic principle of the magnetic compass（）.
By convention，the north seeking ends of a compass’ magnets are colored（）.
Which statement about the gyrocompass is FALSE（）.
The Flinders bar on a magnetic compass compensates for the（）.
The quadrantal spheres are used to（）.
The Flinders bar and the quadrantal spheres should be tested for permanent magnetism at what interval（）.
What are the only magnetic compass correctors that correct for both permanent and induced effects of magnetism?（）