A.frequency allocated
B.both language and frequency
C.language used
D.transmission power and time
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A.10 minutes every 4 hours
B.half an hour every other hour
C.irregular period of time
D.5 minutes every two hours
A.on the bridge
B.in the coast station
C.on the forecastle
D.on starboard side
A.search and rescue
B.safe
C.co-ordinated
D.hydrographic
A.special
B.different
C.expensive
D.valuable
A.a mother ship
B.a lifeboat
C.a life craft
D.all of A,B,C
最新試題
The priority of EGC messages is classified by（）.
SOLAS ships shall be equipped with（）.
Can MF/HF radiotelephone receive the MSI sent from the coast stations alone?（）
In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.
By using（）system a ship can send a distress message and know with certainty it will be received.
On-scene communications will normally take place between（）.
As each MSI message will have a unique identity, the printing of messages already received correctly is（）.
Radio communication（）for many years and helps to save tens of thousands of lives.
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.
For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.