According to the basic concept of GMDSS,()can be rapidly alerted to a distress incident.

A . only SAR authorities on land B . all ships in a very large sea area C . the nearest coast stations and port radios D . the SAR authorities ashore as well as ships in the vicinity of the casualty

时间:2022-10-08 03:15:25 所属题库:GMDSS题库

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