A.special
B.different
C.expensive
D.valuable
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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
A.reach the distress area
B.conduct a sector search
C.send rescue vessels
D.assist coordinately in SAR operation
A.1
B.2
C.3
D.4
A.received alreadly
B.have received
C.had received
D.was receiving
最新試題
Can MF/HF radiotelephone receive the MSI sent from the coast stations alone?()
The rescue coordination center may()on stations which interfere with traffic.
As each MSI message will have a unique identity, the printing of messages already received correctly is().
COSPAS-SARSAT is intended to be used for().
()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.
Every ship constructed on or after()shall comply with all the applicable requirements of this chapter.
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.
By using()system a ship can send a distress message and know with certainty it will be received.
The quality of EGC messages is()affected by the position of the ship, the time of reception and climatic conditions.
If the beacon is mounted at a wrong place, it may()by sea water, chemicals, exhaust and vibrations.