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
An ECDIS is required to display which information?()
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?().
A radar range to a small,charted object such as a light will provide a line of position in which form?().
An ECDIS is required to display which information?()
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?().
()the canal transit,the radar was operating.
The radar component that generates the radio-frequency energy in the form of short powerful pulses is which of the following?().
Error may be introduced into a magnetic compass by().
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().
()should be used during the poor visibility if the radar’s screen shows heavy sea returns.