A.nonmagnetic
B.weatherproof
C.corrosion resistant
D.capable of being permanently affixed to the vessel
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A.like magnetic poles attract
B.unlike magnetic poles repel
C.unlike poles attract
D.the poles of the compass line up with the geographic poles of the earth
A.north magnetic pole
B.south magnetic pole
C.magnetic prime vertical meridian
D.magnetic equator
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
最新試題
This induced magnetism（）the permanent magnetism already present in the ship.
What are the only magnetic compass correctors that correct for both permanent and induced effects of magnetism?（）
The MOST important feature of the material used for making the binnacle of a standard magnetic compass is that it is（）.
The quadrantal spheres are used to（）.
When changing from a compass course to a true course you should apply（）.
The variation for most given areas undergoes（）change，the amount of which is also noted on charts.
What is used to correct for both induced and permanent magnetism，and consequently must be readjusted with radical changes in latitude（）.
By convention，the north seeking ends of a compass’ magnets are colored（）.
The Flinders bar on a magnetic compass compensates for the（）.
The line which connects the points of zero magnetic dip is（）.