A.transmit distress signal
B.send response signal
C.transmit the signal of ship’s position
D.be started by X-band radar
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A.the main source of energy
B.emergency source of electrical power
C.the reserve source of energy
D.all of above
A.Goonhilly, UK
B.Yamaguchi, Japan
C.Perth, Australia
D.Southbury, USA
A.180E above the equator
B.64.5 E over the IOR
C.15.5W along the straight line
D.55.5W above the equator
A.complicated circumstances
B.changeable atmospheric pressure
C.large density of traffic
D.some strong signals from unwanted satellites
A.besides the polar regions
B.including the North Pole and the South Pole
C.above 70N and below 70S
D.as far north and south 70
最新試題
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.
In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.
Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.
Radio beacon can be activated（）in case of distress.
All coast radio stations（）DSC installed for VHF and HF.
The vessel has stayed in port for seven days because she needs（）.
SOLAS ships shall be equipped with（）.
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.
Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.
For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.