单项选择题
NAVTEX transmissions have a designed range of about（）nautical miles.
A.300
B.400
C.500
D.600
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相关考题
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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 -
单项选择题
Ships at sea are in urgent need of MSI because they are（）various kinds of danger.
A.subject for
B.liable to
C.easy to meet
D.always encounter -
单项选择题
In the GMDSS, MSI broadcasts will be made on two dedicated systems:（）and（）.
A.NBDP/VHF radio
B.Inmarsat safetyNet/NAVTEX
C.Safety service / Inmarsat-A
D.Long range / short range
