The（）is that search and rescue authorities ashore, as well as shipping in the immediate vicinity of the ship in distress, will be rapidly alerted to a distress incident so they can assist in a coordinated SAR operation with the minimun delay.<br>A:common communication system<br>B:distress traffic system<br>C:basic concept of GMDSS<br>D:SAR operation procedure

The（）is that search and rescue authorities ashore, as well as shipping in the immediate vicinity of the ship in distress, will be rapidly alerted to a distress incident so they can assist in a coordinated SAR operation with the minimun delay.
A:common communication system
B:distress traffic system
C:basic concept of GMDSS
D:SAR operation procedure

出自：海船船员证

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