A.Soundings
B.Waypoints
C.Meteorological data
D.Radar targets
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A.Radar targets
B.ARPA vectors
C.Hydrographic data
D.All of the above
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
最新試題
The minimum range at which a target can be detected is basically determined by which of the following?（）.
Gyrocompass repeaters reproduce the indications of the master gyrocompass. They are（）.
（）is on the panel of radar.
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?（）.
An ECDIS is required to display which information?（）
The transmission time duration of a single pulse of radio-frequency energy is a function of the（）.
A Doppler log in the volume reverberation mode indicates（）.
A Doppler speed log indicates speed over ground（）.
How is variation indicated on a small-scale nautical chart?（）.
Error may be introduced into a magnetic compass by（）.