單項(xiàng)選擇題

The COSPAS-SARSAT system can provide distress alerts to the appropriate rescue authorities（）.

A.at sea
B.on land
C.in the air
D.throughout the world

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單項(xiàng)選擇題

For COAPAS-SARSAT system,（）process the distress signal from EPIRB to determine its position and identity.

A.COSPAS-SARSAT
B.ground receiving stations
C.spacecraft
D.satellite SAR instrument

單項(xiàng)選擇題

The COSPAS-SARSAT system can provide distress alerts to the appropriate authorities（）.

A.anywhere in the world
B.at sea
C.in the air
D.ashore