A.beam
B.radar
C.light beacon
D.reflector
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A.Straight line
B.Arc
C.Parabola
D.Hyperbola
A.relative display
B.composite display
C.stabilized display
D.unstabilized display
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
最新試題
Deviation in a compass is caused by the（）.
A deadhead is a(n)（）.
（）20 targets can be tracked at one time．When maximum tracking capacity is reached，no further acquisitions are possible.
You are using a radar in which your own ship is shown at the center，and the heading flash always points to 0°. If bearings are measured in relation to the flash，what type of bearings are produced?（）.
The transmission time duration of a single pulse of radio-frequency energy is a function of the（）.
An ECDIS is required to display which information?（）
Deviation is the angle between the（）.
What will NOT induce errors into a doppler sonar log?（）
The radar component that produces the synchronizing signal and triggers the indicator sweep is which of the following?（）.
Compass deviation is caused by（）.