單項選擇題（） operates at a transfer rate of up to 9600 bits per second and is telephone，telex and facsimile（fax）capable.

A.INMARSAT A
B.INMARSAT C
C.SafetyNET
D.NAVTEX


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1.單項選擇題（） is not required by bridge-to-bridge communications.

A.VHF
B.SART
C.NAVTEX
D.LES

3.單項選擇題What is the basic concept of GMDSS? （）

A.Search and rescue authorities ashore can be alerted to a distress situation
B.Shipping in the immediate vicinity of a ship in distress will be rapidly alerted
C.Shoreside authorities and vessels can assist in a coordinated SAR operation with minimum delay
D.All of the above

4.單項選擇題What is the action that a GMDSS Radio Operator should take when a DSC distress alert is received? （）

A.No action is necessary，as the DSC control unit will automatically switch to the NBDP follow-on communications frequency
B.The operator should immediately set continuous watch on the radiotelephone frequency that is associated with the frequency band on which the distress alert was received
C.The Operator should immediately set continuous watch on VHF channel 70
D.The Operator should immediately set continuous watch on the NBDP frequency that is associated with the frequency band on which the distress alert was received

5.單項選擇題What is a GMDSS functional or carriage requirement for compulsory vessels?（）

A.A compulsory vessel must carry at least two (2) licensed GMDSS operators
B.A compulsory vessel must satisfy certain equipment carriage requirements that are determined by where the vessel sails
C.A compulsory vessel must be able to transmit and respond to distress alerts
D.All of the above