单项选择题
A.walked around until he is back to normal
B.given several shots of whiskey
C.kept lying down and warm
D.allowed to do as he wishes
单项选择题 According to the Chemical Data Guide，what does ethyl chloride produce when ignited?（）
单项选择题 A victim is coughing and wheezing from a partialobstruction of the airway. An observer should （）.
单项选择题 A victim has suffered a second-degree burn to a small area of the lower arm. What is the proper treatment for this injury?（）