单项选择题
A person has suffered a laceration of the arm. Severe bleeding has been controlled by using a sterile dressing and direct pressure. What should you do next?（）
A.Apply a tourniquet to prevent the bleeding from restarting
B.Apply a pressure bandage over the dressing
C.Remove any small foreign matter and apply antiseptic
D.Administer fluids to assist the body in replacing the lost blood
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单项选择题
A person has fallen overboard and is being picked up with a lifeboat. If the person appears in danger of drowning，the lifeboat should make（）.
A.an approach from leeward
B.an approach from windward
C.the most direct approach
D.an approach across the wind -
单项选择题
A negative metacentric height（）.
A.will always cause a vessel to capsize
B.should always be immediately corrected
C.always results from off-center weights
D.All of the above are correct -
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A minor heat burn of the eye should be treated by（）.
A.gently flooding with water
B.warming the eye with moist warm packs
C.laying the person flat on his back
D.mineral oil drops directly on the eye
