A.received alreadly
B.have received
C.had received
D.was receiving
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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
A.ship-to-shore
B.shore-to –ship
C.bridge-to-bridge
A.general radio communication
B.MSI
C.improved distress and safety communication
D.bridge-to-bridge communication
最新試題
The priority of EGC messages is classified by（）.
If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.
At least two two-way VHF radiotelephone apparatus shall be provided on every cargo ship of（）tons gross tonnage and upwards but less than 500 tons gross tonnage.
The frequency（）the safety message will be transmitted shall be included in DSC safety call.
Please use（）for（）.
As each MSI message will have a unique identity, the printing of messages already received correctly is（）.
The vessel has stayed in port for seven days because she needs（）.
Radio beacon can be activated（）in case of distress.
On-scene communications will normally take place between（）.
SOLAS ships shall be equipped with（）.