单项选择题

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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单项选择题

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

单项选择题

Actually, the date for entry into effect will be 1st February（）.Though the text does not tell us about it.

A.1995
B.1998
C.1999
D.2000

单项选择题

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