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
A tall object with a light on or near the shore，to act as a guide or warning to mariners is called（）.
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 in a compass is caused by the（）.
（）is on the panel of radar.
Gyrocompass repeaters reproduce the indications of the master gyrocompass. They are（）.
AREAS WHICH CANNOT BE SCANNED BY THE RADAR OF THE VESSEL BECAUSE THEY ARE SHIELDED BY PARTS OF ITS SUPERSTRUCTURE，MASTS，ETC means（）.
A radar range to a small，charted object such as a light will provide a line of position in which form?（）.
A Doppler log in the bottom return mode indicates the（）.
How is variation indicated on a small-scale nautical chart?（）.