呼吸机参数的调节，降低二氧化碳可采用()
A．增加PIP
B．增加呼吸频率
C．降低PEEP
D．延长呼气时间
E．提高FiO2
参考答案：A, B, C
小剂量就有抗焦虑作用的药物
A．苯巴比妥B．地西泮C．吗啡D．苯妥英钠E．氯丙嗪
Dr Smith was always ________ the poor and the sick, often providing them with free medical care.[ ]
A. reminded of
B. absorbed in
C. tended by
D. concerned about
