A.Radar targets
B.ARPA vectors
C.Hydrographic data
D.All of the above
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A.beam
B.radar
C.light beacon
D.reflector
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
最新試題
The radar component that generates the radio-frequency energy in the form of short powerful pulses is which of the following?（）.
An ECDIS is required to display which information?（）
（）the canal transit，the radar was operating.
An ECDIS is required to display which information?（）
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（）.
（）is on the panel of radar.
A barometer showing falling pressure indicates the approach of a（）.
The number of pulses of energy transmitted per second is call the（）.
An ECDIS is required to display which information?（）
An electronic depth finder operates on the principle that（）.