A.Mate's license
B.Restricted radiotelephone operator permit
C.Second-class radio operator's license
D.Seaman's document
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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
A.Focus line
B.Base line
C.Side line
D.Center line
A.DCU
B.UTC
C.ENC
D.MENU
A.AIS
B.ECDIS
C.GPS
D.VDR
最新試題
The information received by AIS will be displayed on（）.
The line connecting the Loran-C master station with a secondary station is called the（）.
The time interval between the transmission of signals from a pair of Loran-C stations is very closely controlled and operates with（）.
Automatic identification systems（AIS）are required to（）.
（）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（）.
Would you mind（）your DF?
Which of the following statements is TRUE regarding automatic identification systems（AIS）（）.
The operation of which aids to navigation may be suspended during war or national emergency（）.
（）is not a component of GPS.