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單項選擇題

All stations which receive a distress alert shall immediately cease（）.

A.any transmission
B.any harmful transmission
C.to use radiotelephone
D.using radiotelephone

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單項選擇題

When receiving a distress alert, the SAR authorities ashore and the ships in the vicinity of the ship in distress will（）soonest.

A.reach the distress area
B.conduct a sector search
C.send rescue vessels
D.assist coordinately in SAR operation

單項選擇題

In the GMDSS, distress alerting can be transmitted in（）directions.

A.1
B.2
C.3
D.4

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