單項選擇題The broadcast of MSI is made on two dedicated systems. “dedicated” means().

A.special
B.different
C.expensive
D.valuable


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1.單項選擇題A SART can be fixed on().

A.a mother ship
B.a lifeboat
C.a life craft
D.all of A,B,C

2.單項選擇題All stations which receive a distress alert shall immediately cease().

A.any transmission
B.any harmful transmission
C.to use radiotelephone
D.using radiotelephone

3.單項選擇題When receiving a distress alert, the SAR authorities ashore and the ships in the vicinity of the ship in distress will()soonest.

A.reach the distress area
B.conduct a sector search
C.send rescue vessels
D.assist coordinately in SAR operation

5.單項選擇題We()the distress signal on our own radio before the shore station relayed it to us.

A.received alreadly
B.have received
C.had received
D.was receiving