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
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?（）.
The number of pulses of energy transmitted per second is call the（）.
What will NOT induce errors into a doppler sonar log?（）
An electronic depth finder operates on the principle that（）.
Error may be introduced into a magnetic compass by（）.
Deviation in a compass is caused by the（）.
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 radar display in which North is always at the top of the screen is a(n)（）.
A Doppler log in the volume reverberation mode indicates（）.
（）the canal transit，the radar was operating.