Bleeding from a vein may be ordinarily controlled by（）.

A.dark red and has a steady flow
B.bright red and slow
C.bright red and spurting
D.dark red and spurting

A.flood the burned area with warm water for two minutes
B.brush away the charred skin and wrap the burned area
C.cover the burned area with a clean cloth and transport the patient to a medical facility
D.apply ointment or spray to the burned area and wrap with a clean cloth

A.require loading operations to be shut down until the atmosphere clears
B.are toxic to human life
C.are subject to spontaneous combustion
D.may be explosive in some concentrations