A.Radar
B.GPS
C.DF
D.Satellite Navigator
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A.10 meters
B.20 meters
C.50 meters
D.100 meters
A.Satellite clock
B.Ship's speed
C.Atmospheric/ionospheric propagation
D.Receiver
A.Parallel bearings
B.Long-range bearings
C.Short-range bearings
D.Cross bearings
A.High frequency pulses
B.Combinations of high and low frequency pulses
C.The same frequency for all stations in a chain
D.Varied long and short pulses
A.An atomic time standard
B.Daylight Savings Time
C.Eastern Standard Time
D.Greenwich Mean Time
最新試題
Radar makes the most accurate determination of the（）.
Loran-C uses the multiple pulse system because（）.
The heading of a vessel is indicated by what part of the compass? （）
（）is not a component of GPS.
What does not contribute to the commercial GPS receiver position error（）.
The use of pulse groups and extremely precise timing at each Loran-C station makes possible the use of（）.
With respect to automatic identification systems（AIS），which information is expected to be broadcast every 1 to 10 seconds（）.
In using Loran-C，skywave reception gives greater range but is（）.
The loran lines drawn on navigation charts represent（）.
While you are at anchor，what will serve as a positive warning that you are drifting towards the wrecks located to the NW and SW of your 2215 position（）.