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
In using Loran-C,skywave reception gives greater range but is().
When navigating using DGPS(Differential Global Positioning System)you may expect your position to be accurate to within a radius of().
The line connecting the Loran-C master station with a secondary station is called the().
You are about to go to sea and adjust the magnetic compass.To expedite the adjustment at sea,in what order should the following dockside adjustments be made().
When your vessel is proceeding to the area of traffic density,()is used to determine the exact ranges of other ships or objects in the vicinity.
Radar makes the most accurate determination of the().
The operation of which aids to navigation may be suspended during war or national emergency().
If the radio signal ground wave extends out for less distance than the minimum skywave distance,there is an area in which no signal is received.This is called the().
()is not an alarm required by IMO standards to be available on the ECDIS.
The receiver uses()satellites to compute latitude,longitude,altitude,and velocity.