單項(xiàng)選擇題

Ships sailing in（）are able to receive and print out EGC messages.

A.a fixed area or Navarea in any ocean region
B.a Navarea or weather forecast area
C.the designated area or given geographic position
D.anywhere of the world

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單項(xiàng)選擇題

Maritime Safety Information（）International SafetyNet Service and NAVTEX Service.

A.consists of
B.can be received
C.is transmitted by
D.Are made on

單項(xiàng)選擇題

If the DSC controller is configured for MF/HF operation, the distress will be sent on（）.

A.double frequencies
B.single frequency
C.dedicated frequency
D.multiple frequencies