A.10 minutes every 4 hours
B.half an hour every other hour
C.irregular period of time
D.5 minutes every two hours
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A.on the bridge
B.in the coast station
C.on the forecastle
D.on starboard side
A.search and rescue
B.safe
C.co-ordinated
D.hydrographic
A.special
B.different
C.expensive
D.valuable
A.a mother ship
B.a lifeboat
C.a life craft
D.all of A,B,C
A.any transmission
B.any harmful transmission
C.to use radiotelephone
D.using radiotelephone
最新試題
SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.
By using（）system a ship can send a distress message and know with certainty it will be received.
The priority of EGC messages is classified by（）.
What following is not among the function of SOLAS ships?（）
Every ship constructed on or after（）shall comply with all the applicable requirements of this chapter.
The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.
The frequency（）the safety message will be transmitted shall be included in DSC safety call.
All coast radio stations（）DSC installed for VHF and HF.
Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.
（）by an ice-breaker, it is important to maintain a continuous listening watch on the appropriate VHF channel and to maintain a proper look-out for sound and visual signals.