单项选择题
All NAVTEX messages（）owing to their nature of importance.
A.can suppress
B.can be suppressed
C.can not be suppressed
D.are to be suppressed
点击查看答案&解析
相关考题
-
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 -
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 -
单项选择题
The NAVTEX receiver can be mounted on（）.
A.on the bridge
B.in the coast station
C.on the forecastle
D.on starboard side
