單項選擇題If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.

A.be damaged
B.work normally regardless of harmful conditions
C.not wok though it is not in a bad condition


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1.單項選擇題By using（）system a ship can send a distress message and know with certainty it will be received.

A.COSPAS-SARSAT
B.SATELLITE
C.terrestrial radio
D.INMARSAT

3.單項選擇題COSPAS-SARSAT is intended to be used for（）.

A.distress alerting
B.locating 406mhz EPIRBs
C.storing distress signal
D.A and B

4.單項選擇題Can MF/HF radiotelephone receive the MSI sent from the coast stations alone?（）

A.No, it receives the MSI from ship stations
B.Yes, it can
C.only with NBDP terminal, can it receives the MSI sent from coast stations
D.No, it can not receive the MSI sent from coast stations

5.單項選擇題The priority of EGC messages is classified by（）.

A.distress, urgent and safety
B.safety and routine
C.urgent, safety and routine
D.distress, urgent, safety and routine