单项选择题
A.1980 B.1981 C.1979 D.1982
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（）in a coordinated search and rescue operation with the minimum delay.
A.assist B.send a rescue vessel C.search the distress area D.reach the distress position at once
In areas covered by Inmarsat HF can be used as an（）to s...
单项选择题In areas covered by Inmarsat HF can be used as an（）to satellite communications.
A.alternation B.alternate C.alter D.alternative
With the help of GMDSS（）can be alerted to a distress in...
单项选择题With the help of GMDSS（）can be alerted to a distress incident as soon as possible.
A.all ships in a large sea area B.only the sea authorities ashore C.the SAR units ashore and at sea D.the port radios and the coast stations
