单项选择题
A.any transmission B.any harmful transmission C.to use radiotelephone D.using radiotelephone
When receiving a distress alert, the SAR authorities as...
单项选择题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
In the GMDSS, distress alerting can be transmitted in（）...
单项选择题In the GMDSS, distress alerting can be transmitted in（）directions.
A.1 B.2 C.3 D.4
We（）the distress signal on our own radio before the sho...
单项选择题We（）the distress signal on our own radio before the shore station relayed it to us.
A.received alreadly B.have received C.had received D.was receiving
