单项选择题
International Navtex service is（）.
A.a terrestrial MF system
B.a satellite communication system
C.a land HF radio system
D.a coastal VHF system
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相关考题
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单项选择题
What language does International NAVTEX use?（）
A.Russian
B.French
C.English
D.German -
单项选择题
When the power of SART is on, it will（）.
A.transmit distress signal
B.send response signal
C.transmit the signal of ship‟s position
D.be start by X-band radar -
单项选择题
Distress traffic（）all messages relating to the immediate assistance required by the ship in distress, including search and rescue communications and signals for locating.
A.consists of
B.is consisted of
C.consisted of
D.are consisted of
