A.1980
B.1981
C.1979
D.1982
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A.assist
B.send a rescue vessel
C.search the distress area
D.reach the distress position at once
A.alternation
B.alternate
C.alter
D.alternative
A.all ships in a large sea area
B.only the sea authorities ashore
C.the SAR units ashore and at sea
D.the port radios and the coast stations
A.some
B.lots of
C.many
D.all
A.impossible
B.possible
C.easy
D.difficult
最新試題
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.
SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.
COSPAS-SARSAT is intended to be used for（）.
On-scene communications will normally take place between（）.
Radio communication（）for many years and helps to save tens of thousands of lives.
Please use（）for（）.
The rescue coordination center may（）on stations which interfere with traffic.
In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.
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.
Radio beacon can be activated（）in case of distress.