A.full confirmation
B.precise appreciation
C.immediate assessment
D.timely recognition
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A.direction of a target
B.distance to a target
C.size of a target
D.shape of a target
A.brightness of objects
B.color of targets
C.shape of targets
D.bearing of objects
A.Latitude
B.Longitude
C.Speed
D.Time
A.deviation
B.variation
C.local attraction
D.All of the above
A.at close range
B.at end on situation
C.at head on situation
D.at crossing situation
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The operator of the ship’s radiotelephone,if the radiotelephone is carried voluntarily,must hold at least a().
The operation of which aids to navigation may be suspended during war or national emergency().
Would you please()on the radar?
The receiver uses()satellites to compute latitude,longitude,altitude,and velocity.
The use of pulse groups and extremely precise timing at each Loran-C station makes possible the use of().
Loran-C is which type of system().
()is not an alarm required by IMO standards to be available on the ECDIS.
()is a digitized“picture”of a chart.
The loran lines drawn on navigation charts represent().