A.local-mode coverage
B.SAR operation
C.data process
D.continuous broadcast
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A.transmit distress signal
B.send response signal
C.transmit the signal of ship’s position
D.be started by X-band radar
A.the main source of energy
B.emergency source of electrical power
C.the reserve source of energy
D.all of above
A.Goonhilly, UK
B.Yamaguchi, Japan
C.Perth, Australia
D.Southbury, USA
A.180E above the equator
B.64.5 E over the IOR
C.15.5W along the straight line
D.55.5W above the equator
A.complicated circumstances
B.changeable atmospheric pressure
C.large density of traffic
D.some strong signals from unwanted satellites
最新試題
Ship-to-ship distress alerting should be conducted by（）.
SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.
Please use（）for（）.
The priority of EGC messages is classified by（）.
The vessel has stayed in port for seven days because she needs（）.
On-scene communications will normally take place between（）.
In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.
Before GMDSS, if the radio officer on board is serious ill,（）.
The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.
Distress traffic is the communication（）between the station in distress and the ships, aircraft, coast radio stations, coast earth stations and rescue centers participating in the rescue work.