A.Mate's license
B.Restricted radiotelephone operator permit
C.Second-class radio operator's license
D.Seaman's document
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你可能感興趣的試題
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 time interval between the transmission of signals from a pair of Loran-C stations is very closely controlled and operates with（）.
What does not contribute to the commercial GPS receiver position error（）.
Which statement concerning GPS is TRUE（）.
Which of the following statements is TRUE regarding crane operations（）.
To obtain accuracy in fixing by DF，（）and three stations should be used.
The information received by AIS will be displayed on（）.
Would you please（）on the radar?
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（）.
In using Loran-C，skywave reception gives greater range but is（）.
The loran lines drawn on navigation charts represent（）.