A.the radio regulations
B.the technical terms and definitions
C.how to operate the GMDSS SES equipment
D.Maritime Communications
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A.only SAR authorities on land
B.all ships in a very large sea area
C.the nearest coast stations and port radios
D.the SAR authorities ashore as well as ships in the vicinity of the casualty
A.countries
B.states
C.names
D.groups
A.one
B.two
C.three
D.four
A.a dummy antenna
B.a supporting facilities
C.a back-up equipment
D.an antenna
A.one-way
B.two-way
C.double-effect
D.one-effect
最新試題
（）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.
As each MSI message will have a unique identity, the printing of messages already received correctly is（）.
Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.
The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.
Radio communication（）for many years and helps to save tens of thousands of lives.
Ship-to-ship distress alerting should be conducted by（）.
On-scene communications will normally take place between（）.
By using（）system a ship can send a distress message and know with certainty it will be received.
We consider（）send a helicopter with medical facilities to the distress area.
The frequency（）the safety message will be transmitted shall be included in DSC safety call.