A.identity
B.identical
C.identify
D.identification
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A.cannot
B.are no allowed
C.have the right
D.should get permission to
A.receive shore-to-ship distress alerting
B.transmit ship-to-shore distress alerting
C.receive message for public correspondence
D.transmit and receive locating signals
A.the radio regulations
B.the technical terms and definitions
C.how to operate the GMDSS SES equipment
D.Maritime Communications
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
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The rescue coordination center may（）on stations which interfere with traffic.
If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.
Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.
Before GMDSS, if the radio officer on board is serious ill,（）.
Radio beacon can be activated（）in case of distress.
SOLAS ships shall be equipped with（）.
As each MSI message will have a unique identity, the printing of messages already received correctly is（）.
Can MF/HF radiotelephone receive the MSI sent from the coast stations alone?（）
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（）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.