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急救课上,学心肺复苏急救。教授说:“双手按压胸部,劲儿不能太大,压下2-3CM即可,劲儿太大容易把病人肋骨压断。下面请
First aid class, learn cardiopulmonary resuscitation first aid. Professor said: ”hands press the chest, effort can not be too large, can be depressed 2-3CM, awkward too easy to crush the patient's rib.