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
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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
A.Navigational satellites
B.Loran
C.Omega
D.Any of the above
A.Ground waves
B.Skywaves
C.Either ground waves or skywaves interchangeably
D.An average between ground wave and skywave positions
最新試題
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（）.
The receiver uses（）satellites to compute latitude，longitude，altitude，and velocity．
With respect to automatic identification systems（AIS），which information is required to be broadcast every 1 to 10 seconds（）.
The loran lines drawn on navigation charts represent（）.
Which of the following statements is TRUE regarding automatic identification systems（AIS）（）.
（）is a digitized“picture”of a chart.
The information received by AIS will be displayed on（）.
The line connecting the Loran-C master station with a secondary station is called the（）.
To obtain accuracy in fixing by DF，（）and three stations should be used.
Which one of the followings does not limit the effective range of radar（）.