A.reach the distress area
B.conduct a sector search
C.send rescue vessels
D.assist coordinately in SAR operation
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A.1
B.2
C.3
D.4
A.received alreadly
B.have received
C.had received
D.was receiving
A.MF
B.VHF
C.HF
D.LF
A.1995
B.1998
C.1999
D.2000
A.common communication system
B.distress traffic system
C.basic concept of GMDSS
D.SAR operation procedure
最新試題
Please use（）for（）.
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.
The priority of EGC messages is classified by（）.
On-scene communications will normally take place between（）.
If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.
As each MSI message will have a unique identity, the printing of messages already received correctly is（）.
Before GMDSS, if the radio officer on board is serious ill,（）.
Can MF/HF radiotelephone receive the MSI sent from the coast stations alone?（）
SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.
Radiotelephony communication or radio telex communication or both will be carried out by terrestrial or satellite means,（）the equipment fitted on ship and the area in which the incident occurs.