A.fixed
B.matched
C.fitted
D.equal
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A.square
B.triangle
C.circle
D.rectangle
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
最新試題
We consider（）send a helicopter with medical facilities to the distress area.
Can MF/HF radiotelephone receive the MSI sent from the coast stations alone?（）
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.
If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.
The rescue coordination center may（）on stations which interfere with traffic.
Ship-to-ship distress alerting should be conducted by（）.
The frequency（）the safety message will be transmitted shall be included in DSC safety call.
The vessel has stayed in port for seven days because she needs（）.
Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.
Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.