A.Q-code
B.Telephone numbers and addresses
C.the international Codes of Signals
D.radio instructions
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A.digital codes
B.code messages
C.norse codes
D.distress messages
A.DSC
B.MSI
C.EGC
D.NBDP
A.Navigational broadcast
B.weather forecast
C.Urgency message
D.Maritime Safety Information
A.Lifeboat
B.A survival craft
C.An EPIRB
D.A SART
A.COSPAS-SARSAT
B.Ground receiving stations
C.storing distress signal
D.Near-polar orbiting satellites
最新試題
On-scene communications will normally take place between（）.
（）by an ice-breaker, it is important to maintain a continuous listening watch on the appropriate VHF channel and to maintain a proper look-out for sound and visual signals.
Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.
Every lifeboat which is fitted with a fixed two-way（）radiotelephone apparatus with an antenna which is separately mounted shall be provided with arrangements for sitting and securing the antenna effectively in its operating position.
Radio communication（）for many years and helps to save tens of thousands of lives.
COSPAS-SARSAT is intended to be used for（）.
Please use（）for（）.
The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.
Every lifeboat which is fitted with a fixed two-way vhf radiotelephone apparatus with（）which is separately mounted shall be provided with arrangements for sitting and securing the antenna effectively in its operating position.
International Navtex service means the coordinated broadcast and automatic reception on（）khz of maritime safety information by narrow-band direct-printing telegraphy using English language.