Which of the letter“a” in the following words has a different pronunciation from others?
Which of the letter“a” in the following words has a different pronunciation from others?
一慢性呼衰患者,给予控制性给氧后,病情反而加重,且PaCO2上升到9.33kPa(70mmHg),下列因素都不是氧疗失败的原因,但应除外哪项