A.geographic pole and the magnetic pole
B.lubber's line and true north
C.horizontal and the magnetic line of force
D.compass heading and the magnetic heading
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A.varies depending upon the bearing used
B.is the angular difference between magnetic north and compass north
C.is published on the compass rose on most nautical charts
D.is the angular difference between geographic and magnetic meridians
A.into the wind
B.away in fire and smoke
C.directly to the standby boat
D.directly to the nearest land
A.follow-up system
B.transmitter
C.phantom element
D.azimuth motor
A.east
B.west
C.north
D.south
A.The readings are too low (small numerically) and the amount of the error must be added to the compass to obtain true
B.The readings are too low and the amount of the error must be subtracted from the compass to obtain true
C.The readings are too high (large numerically) and the amount of the error must be added to the compass to obtain true
D.The readings are too high and the amount of the error must be subtracted from the compass to obtain true
最新試題
Which statement about the Flinders bar of the magnetic compass is CORRECT（）.
Which statement about the gyrocompass is FALSE（）.
The variation for most given areas undergoes（）change，the amount of which is also noted on charts.
A ship under construction or major repair will acquire permanent magnetism due to（）while sitting stationary in the earth’s magnetic field.
When a magnetic compass is not in use for a prolonged period of time it should（）.
The line which connects the points of zero magnetic dip is（）.
The MOST important feature of the material used for making the binnacle of a standard magnetic compass is that it is（）.
The magnetism in the various structures of a ship changing as a result of cruising，vibration，or aging is termed（）.
The Flinders bar and the quadrantal spheres should be tested for permanent magnetism at what interval（）.
By convention，the north seeking ends of a compass’ magnets are colored（）.