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單項選擇題

Digital Selective Calling means a technique using（）which which enables a radio station to establish contact with, and transfer information to another station or group of stations and complying with the relevant recommendations of the CCIR.

A.digital codes
B.code messages
C.norse codes
D.distress messages

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單項選擇題

（）means a technique using digital codes which enables a radio station to establish contact with, and transfer information to another station or group of stations and complying with the relevant recommendations of the CCIR.

A.DSC
B.MSI
C.EGC
D.NBDP

單項選擇題

（）means navigational and meteorological warnings, meteorological forecasts and other urgent related messages broadcast to ships.

A.Navigational broadcast
B.weather forecast
C.Urgency message
D.Maritime Safety Information

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