單項選擇題

From the ship owner’s point of view,（）is the most important advantage Inmarsat providing with.

A.business opportunity
B.good-quality radio telephone conversations
C.telex service
D.both B and C

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Ships sailing in（）are able to receive and print out EGC message.

A.a fixed area or Navarea in any ocean region
B.a Navarea or weather forecast area
C.the designated area or given geographic position
D.anywhere of the world

單項選擇題

As each MSI message will have a unique identity, the printing of messages already received correctly is（）.

A.automatically suppressed
B.finished by the operator
C.manually suppressed
D.done again