第20题: [单项选择]二氧化碳分压正常值及需机械通气指征分别为:() A. 3.33~4.67kPa(25~35mmHg),>6.00kPa(45mmHg) B. 3.33~4.67kPa(25~35mmHg),>7.33kPa(55mmHg) C. 4.67~6.00kPa(35~45mmHg),>7.33kPa(55mmHg) D. 4.67~6.00kPa(35~45mmHg),>8.66kPa(65mmHg) E. 6.00~7.33kPa(45~55mmHg),>8.66kPa(65mmHg) 参考答案:C