When you have received GA+ from the CES for the INMARSAT-B telex
2023-12-01201到400题
When you have received GA+ from the CES for the INMARSAT-B telex communication, you should immediately select and you required.
A.a CES/telex mode
B.a SES/telex service
C.the service/the subscriber
D.a satellite /an ocean region
正确答案是C
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