A.enter the system/ contact an RCC
B.access to INMARSAT/establish contact with a CES
C.have absolutely priority to enter the system/make contact with a CES
D.enter the system gradually/wait for rescue
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A.1995
B.1998
C.1999
D.2000
A.they all have different limitations with respect to coverage
B.they all have different limitations in the technology they use
C.different systems apply to different ships
D.all of above
A.ship-to-shore
B.shore-to-ship
C.bridge-to-bridge
A.some
B.lots of
C.many
D.all
A.impossible
B.possible
C.easy
D.difficult
最新試題
Can MF/HF radiotelephone receive the MSI sent from the coast stations alone?（）
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.
If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.
Monitoring is especially important in a highly automated system which is dependent on careful（）procedure and format.
Radio beacon can be activated（）in case of distress.
（）will form the basis for distress alerting and safety calling.
We consider（）send a helicopter with medical facilities to the distress area.
The priority of EGC messages is classified by（）.
Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.