单项选择题
A.Slightly elevate the head and
B.Keep the person awake
C.Keep the person lying down and at a comfortable temperature
D.Give the person a stimulant to increase blood flow
单项选择题 After a collision or accident involving an uninspected vessel，regulations require that the operator assist persons affected，but only if the operator can do so without（）.
单项选择题 According（）the report，the ship hit the wharf when berthing.
单项选择题 A wooden float placed between a ship and a dock to prevent damage to both is called a（）.