单项选择题
A.apply ointment to the burned area
B.flood the affected area with water
C.wrap the burn with sterile dressing
D.apply an ice pack to the burned area
单项选择题 The minimum concentration of a vapor in air which can form an explosive mixture is called the（）.
单项选择题 The minimum amount of lifesaving equipment required aboard an 85-foot uninspected towing vessel consists of（）.
单项选择题 The MINIMUM acceptable size for a towing bridle would be that size in which the safe working load (SWL) of each leg of the bridle is equal to（）.