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单选题
A mobile earth station in the maritime mobile-satellite service,which is located on board ship,is called().
A
an LES
B
an SES
C
a ship station
D
a Land Mobile Station
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Space segmentC
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考题
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考题
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EPIRBB
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By the Coast Earth Station (CES) controlling the distress communications on that frequencyC
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exchangeB
to exchangeC
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ITUB
IMOC
INMARSAT ORGANIZATIOND
the nearest CES
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a réservéeB
a été réservéC
sera été réservéD
aura été réservée
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