单项选择题
A.identify B.Correct C.Reject D.Print out
Navtex transmitter identification character（）is used to...
单项选择题Navtex transmitter identification character（）is used to identify the broadcasts which are to be accepted by the receiver and those are to be rejected.
A.B2 B.B1 C.MAR D.NNN
The difference between international and national Navte...
单项选择题The difference between international and national Navtex Service is limited to（）.
A.frequency allocated B.both language and frequency C.language used D.transmission power and time
A Navtex station in each NAVAREA is usually allowed to ...
单项选择题A Navtex station in each NAVAREA is usually allowed to have（）for transmission.
A.10 minutes every 4 hours B.half an hour every other hour C.irregular period of time D.5 minutes every two hours
