單項選擇題

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

你可能感興趣的試題

單項選擇題

The Inmarsat system is open for use by（）countries on a non-discriminatory basis.

A.some
B.lots of
C.many
D.all

單項選擇題

Within the polar areas it is（）to see a satellite in geo-stationary orbit .

A.impossible
B.possible
C.easy
D.difficult