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單項選擇題

The maritime access code of telephone mode in INMARSAT-A terminal for the IOR is（）.

A.871
B.872
C.873
D.874

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單項選擇題

When you have received GA+ from the CES for the INMARSAT-A telex communication, you should immediately select（）and（）you required.

A.an CES / telex mode
B.an SES telex service
C.the service /the subscriber
D.a satellite /an ocean region

單項選擇題

The maritime access code for the AOR-E is（）in INMARSAT-A Telex Service.

A.581
B.582
C.583
D.584

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