A.Satellite clock
B.Ship's speed
C.Atmospheric/ionospheric propagation
D.Receiver
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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
A.one
B.two
C.three
D.four
A.Mate's license
B.Restricted radiotelephone operator permit
C.Second-class radio operator's license
D.Seaman's document
最新試題
（）is a digitized“picture”of a chart.
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（）.
Which of the following statements is TRUE regarding crane operations（）.
（）is not an alarm required by IMO standards to be available on the ECDIS.
With respect to automatic identification systems（AIS），which information is required to be broadcast every 1 to 10 seconds（）.
The heading of a vessel is indicated by what part of the compass? （）
Most modern Loran-C receivers，when not tracking properly，have a（n）（）.
To obtain accuracy in fixing by DF，（）and three stations should be used.
The loran lines drawn on navigation charts represent（）.