单项选择题

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

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单项选择题

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

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

单项选择题

To establish a communication channel for the telex service in the INMARSAT-Aterminal, you should first（）.

A.establish a communication channel from the CES, via the International Telex Network to the final destination
B.set up a communication channel from your SES, via a satellite, to a CES within your ocean region
C.set up a channel directly to the addressee at the destination
D.establish a channel from your terminal , via the International Telex Network to a CES within your ocean region

单项选择题

In general, there are two parts in an SES, One of these is antenna eqipment also referred to as（）.

A.BDE
B.UDE
C.AEP
D.ADE