A.dedicated system
B.MSI broadcasts
C.518KHZ
D.channel 16
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A.ship’s movement
B.safety
C.ship’s management
D.hazards
A.by day or at night
B.almost round the clock
C.somewhat and sometime
D.from sunrise and sunset
A.DF
B.Radar System
C.DSC System
D.COSPAS-SARSAT
A.nature of distress
B.type of assistance required
C.course and speed and time at which the information was recorded
D.A, B, C are all right
A.when two stations communicate with each other
B.in any radio system and at any time
C.when one ship sends a message to another station
D.for communication among some stations
最新試題
The vessel has stayed in port for seven days because she needs（）.
Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.
Monitoring is especially important in a highly automated system which is dependent on careful（）procedure and format.
By using（）system a ship can send a distress message and know with certainty it will be received.
Radio communication（）for many years and helps to save tens of thousands of lives.
COSPAS-SARSAT is intended to be used for（）.
SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.
Please use（）for（）.
What following is not among the function of SOLAS ships?（）
The frequency（）the safety message will be transmitted shall be included in DSC safety call.