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單項(xiàng)選擇題

Which Inmarsat system applies store-and-forward messaging?（）

A.Inmarsat-A
B.Inmarsat-C
C.Inmarsat-B
D.Inmarsat-M

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單項(xiàng)選擇題

（）are operated as a secondary method of alerting in the GMDSS.

A.satellite EPIRBs
B.Non-satellite EPIRBs
C.SES and DSC

單項(xiàng)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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