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
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最新試題
The magnetism in the various structures of a ship changing as a result of cruising,vibration,or aging is termed().
A ship under construction or major repair will acquire permanent magnetism due to()while sitting stationary in the earth’s magnetic field.
What is the name of the movable,radial guide line used to measure direction on a radar?()
The MOST important feature of the material used for making the binnacle of a standard magnetic compass is that it is().
When changing from a compass course to a true course you should apply().
Variation is a compass error that you().
When crossing the magnetic equator the().
Which magnetic compass corrector(s)can be set while the vessel is on a heading of magnetic north or magnetic south().
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.
What is the basic principle of the magnetic compass?()