單項(xiàng)選擇題

In which year was the COSPAS-SARSAT system established?（）

A.1980
B.1981
C.1979
D.1982

你可能感興趣的試題

單項(xiàng)選擇題

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

單項(xiàng)選擇題

In areas covered by Inmarsat HF can be used as an（）to satellite communications.

A.alternation
B.alternate
C.alter
D.alternative

<video id="7qaow"><sup id="7qaow"></sup></video>