A.unstabilized display
B.stabilized display
C.composition display
D.relative display
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A.on the same course as your vessel
B.at the same speed as your vessel
C.on the same course and speed as your vessel
D.on a reciprocal course at the same speed as your vessel
A.Separated line
B.Divided line
C.Reference line
D.Segregated line
A.at all times
B.in the bottom return mode
C.in the volume reverberation mode
D.only when there is no current
A.speed being made good
B.speed through the water
C.the set of the current
D.the depth of the water
A.velocity of the current
B.bottom characteristics
C.depth of the water
D.speed over the ground
最新試題
A tall object with a light on or near the shore，to act as a guide or warning to mariners is called（）.
（）is on the panel of radar.
（）20 targets can be tracked at one time．When maximum tracking capacity is reached，no further acquisitions are possible.
Compass error is equal to the（）.
A deadhead is a(n)（）.
The minimum range at which a target can be detected is basically determined by which of the following?（）.
A Doppler speed log indicates speed over ground（）.
（）the canal transit，the radar was operating.
Compass deviation is caused by（）.
An ECDIS is required to display which information?（）