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单选题
The Network Coordination Station for the INMARSAT-A coast stations in the Pacific ocean region is in（）.
A
Yamaguchi, Japan
B
Beijing, China
C
Nakhodka, Russia
D
Perth, Australia
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ARQ/FECD
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单选题If a DSC distress relay is transmitted from coast station , it will（）.A
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Sea Area A2C
Sea Area A3D
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考题
单选题How does a coast radio station communicating by HF radio normally identify itself?（）A
By its subscriber numberB
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考题
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MAYDAYC
SOSD
SECURITY
考题
单选题How is “radio silence” imposed?（）A
By the On Scene Coordinator (OSC)B
By the Coast Earth Station (CES) controlling the distress communications on that frequencyC
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考题
单选题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.A
exchangeB
to exchangeC
exchangingD
exchanged
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