單項(xiàng)選擇題

The GMDSS is a world-wide communication network combining（）with（）.

A.satellite /terrestrial system
B.INMAARSAT/COSPAS-SARSAT
C.SART / EPIRB
D.geostationary/polar-orbiting satellites

你可能感興趣的試題

The general benefit of the GMDSS is to（）.

A.enable SAR operations to start with minimum delay
B.give facilities to marine communication
C.reduce sharply the chances of ship’s sinking
D.both A and C

單項(xiàng)選擇題

By using previous communication system, rescue is often a matter of chance. What does “a matter of chance” mean?（）

A.occasionally
B.accidentally
C.often
D.usually

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The GMDSS is a world-wide communication network combining（）with（）.

你可能感興趣的試題

The general benefit of the GMDSS is to（）.

By using previous communication system, rescue is often a matter of chance. What does “a matter of chance” mean?（）