A.occasionally
B.accidentally
C.often
D.usually
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A.keep
B.kept
C.are keeping
D.have kept
A.has made
B.make
C.has been made
D.is making
A.When the distress alert is sounded
B.When the emergency equipment is switching on
C.When the general emergency alarm is sounded
D.When the distress broadcast is sounded
A.When
B.Where
C.how
D.that
A.If
B.Whenever
C.Because
D.Where
最新試題
Distress traffic is the communication（）between the station in distress and the ships, aircraft, coast radio stations, coast earth stations and rescue centers participating in the rescue work.
Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.
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.
Please use（）for（）.
Every ship constructed on or after（）shall comply with all the applicable requirements of this chapter.
If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.
Radio beacon can be activated（）in case of distress.
Before GMDSS, if the radio officer on board is serious ill,（）.
Can MF/HF radiotelephone receive the MSI sent from the coast stations alone?（）
SOLAS ships shall be equipped with（）.