A.relative display
B.composite display
C.stabilized display
D.unstabilized display
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A.unstabilized display
B.stabilized display
C.composition display
D.relative display
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
最新試題
What will NOT induce errors into a doppler sonar log?（）
（）should be used during the poor visibility if the radar’s screen shows heavy sea returns.
（）the canal transit，the radar was operating.
The radar component that produces the synchronizing signal and triggers the indicator sweep is which of the following?（）.
A deadhead is a(n)（）.
A tall object with a light on or near the shore，to act as a guide or warning to mariners is called（）.
Deviation is the angle between the（）.
A radar display in which North is always at the top of the screen is a(n)（）.
（）20 targets can be tracked at one time．When maximum tracking capacity is reached，no further acquisitions are possible.
An ECDIS is required to display which information?（）