A.keep
B.kept
C.are keeping
D.have kept
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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
A.transmit
B.to transmitting
C.transmitting
D.in transmitting
最新試題
We consider（）send a helicopter with medical facilities to the distress area.
Radiotelephony communication or radio telex communication or both will be carried out by terrestrial or satellite means,（）the equipment fitted on ship and the area in which the incident occurs.
Can MF/HF radiotelephone receive the MSI sent from the coast stations alone?（）
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.
The frequency（）the safety message will be transmitted shall be included in DSC safety call.
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.
（）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.
On-scene communications will normally take place between（）.
COSPAS-SARSAT is intended to be used for（）.
By using（）system a ship can send a distress message and know with certainty it will be received.