A.variation
B.compass error
C.deviation
D.earth's magnetic force
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A.Similize
B.Clock
C.Synchronize
D.Position
A.east two degrees
B.two degrees east
C.two east degrees
D.two-degrees east
A.reflect
B.shown
C.detected
D.defected
A.A vessel on the starboard bow whose bearing is changing and range is decreasing
B.A vessel on the starboard bow whose bearing is steady and range is increasing
C.A vessel on the port bow whose bearing is steady and range is decreasing
D.A vessel on the port bow whose bearing is changing to the left and range decreasing
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Deviation in a compass is caused by the（）.
（）20 targets can be tracked at one time．When maximum tracking capacity is reached，no further acquisitions are possible.
Gyrocompass repeaters reproduce the indications of the master gyrocompass. They are（）.
An electronic depth finder operates on the principle that（）.
A Doppler speed log indicates speed over ground（）.
A FICTIVE LINE DISPLAYED ON THE RADAR SCREEN SEPARATING THE FAIRWAY FOR INBOUND AND OUTBOUND VESSELS SO THAT THEY CAN SAFELY PASS EACH OTHER defines（）.
A Doppler log in the bottom return mode indicates the（）.
The number of pulses of energy transmitted per second is call the（）.
What will NOT induce errors into a doppler sonar log?（）
How is variation indicated on a small-scale nautical chart?（）.