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 radar range to a small，charted object such as a light will provide a line of position in which form?（）.
The transmission time duration of a single pulse of radio-frequency energy is a function of the（）.
AREAS WHICH CANNOT BE SCANNED BY THE RADAR OF THE VESSEL BECAUSE THEY ARE SHIELDED BY PARTS OF ITS SUPERSTRUCTURE，MASTS，ETC means（）.
The radar component that produces the synchronizing signal and triggers the indicator sweep is which of the following?（）.
An indirect radar echo is caused by a reflection of the main lobe of the radar beam off the observer’s vessel. Which of the following is NOT a characteristic of indirect echoes?（）.
A Doppler log in the volume reverberation mode indicates（）.
（）is on the panel of radar.
Gyrocompass repeaters reproduce the indications of the master gyrocompass. They are（）.
A radar contact will remain stationary on a relative motion radar display only when it is（）.
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（）.