A.square
B.triangle
C.circle
D.rectangle
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A.cannot
B.are not allowed
C.have the right
D.should get permission to
A.every two years
B.every three years
C.every year
D.every four years
A.the radio regulations
B.the technical terms and definitions
C.how to operate the GMDSS SES equipment
D.Maritime Communications
A.alphabetical
B.figure
C.name of stations
D.series
A.radio direction-finding apparatus
B.DSC
C.NAVTEX
D.EPIRB
最新試題
The vessel has stayed in port for seven days because she needs（）.
Before GMDSS, if the radio officer on board is serious ill,（）.
Every lifeboat which is fitted with a fixed two-way（）radiotelephone apparatus with an antenna which is separately mounted shall be provided with arrangements for sitting and securing the antenna effectively in its operating position.
By using（）system a ship can send a distress message and know with certainty it will be received.
Radio beacon can be activated（）in case of distress.
What following is not among the function of SOLAS ships?（）
SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.
International Navtex service means the coordinated broadcast and automatic reception on（）khz of maritime safety information by narrow-band direct-printing telegraphy using English language.
If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.
At least two two-way VHF radiotelephone apparatus shall be provided on every cargo ship of（）tons gross tonnage and upwards but less than 500 tons gross tonnage.