单项选择题

You should conduct a sector search under which of the following circumstances（）.

A.The search target is sighted and then lost
B.More than one vessel is available for a search
C.The search object is a target that will be readily detected by radar
D.An aircraft is available to assist a surface vessel

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单项选择题

You are proceeding to a distress site．The survivors are in liferafts.What will make your ship more visible to the survivors（）.

A.Steering a sinuous course
B.Steering a zig-zag course
C.Turning on all available deck lights at night
D.Dumping debris over the side to make a trail to your vessel

单项选择题

You are approaching another vessel and see that it has the signal flag “O” hoisted．What is your next action（）.

A.Proceed on present course and speed since the vessel is requesting a pilot
B.Attempt to call the vessel on VHF radiotelephone and begin a search because the vessel has a man overboard
C.Attempt to call the vessel on VHF radiotelephone because it is disabled
D.Approach with caution because the vessel is stopped and making no way through the water

单项选择题

When starting CPR on a drowning victim，you should（）.

A.start chest compressions before the victim is removed from the water
B.drain water from the lungs before ventilating
C.begin mouth-to-mouth ventilations as soon as possible
D.do not tilt the head back since it may cause vomiting