單項(xiàng)選擇題On receipt of a distress alert, the SAR units ashore and at sea will（）soonest.

A.coordinate in rescue operation
B.send rescue vessels
C.reach the area at once
D.conduct a sector search


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1.單項(xiàng)選擇題Any ship fitted with SES can（）and（）through the satellite system when sending a distress alert.

A.enter the system/ contact an RCC
B.access to INMARSAT/establish contact with a CES
C.have absolutely priority to enter the system/make contact with a CES
D.enter the system gradually/wait for rescue

3.單項(xiàng)選擇題The GMDSS must combine all various subsystems, because（）.

A.they all have different limitations with respect to coverage
B.they all have different limitations in the technology they use
C.different systems apply to different ships
D.all of above

4.單項(xiàng)選擇題（）communication are intership VHF radio telephone communication.

A.ship-to-shore
B.shore-to-ship
C.bridge-to-bridge

5.單項(xiàng)選擇題The INMARSAT system is open for use by（）countries on a non-discriminatory basis.

A.some
B.lots of
C.many
D.all