测定肺换气效率较好的指标是
A．潮气量B．肺活量C．时间肺活量D．通气/血流比值E．肺扩散容量
参考答案：D
---My dream is to be a teacher.
---Really? You must ___________ children, I think.
A．be good at
B．be good for
C．be afraid of
D．be good with
慢性支气管炎急性发作痰多不易咳出的患者，宜选用
A．氯化铵
B．咳美芬
C．喷托维林
D．可待因
E．氨茶碱
