单选题A mobile earth station in the maritime mobile-satellite service,which is located on board ship,is called（）.Aan LESBan SESCa ship stationDa Land Mobile Station
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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