单项选择题
Bleeding from a vein may be ordinarily controlled by（）.
A.applying direct pressure to the wound B.heavy application of a disinfectant C.pouring ice water directly onto the wound D.pinching the wound closed
单项选择题 Bleeding from a vein is（）.
单项选择题 Basic emergency care for third degree electrical burn is to（）.
单项选择题 Atmospheres laden with coal dust or grain dust caused by loading these cargoes（）.
