1mmolCO2在标准情况下体积约为() ["11.26ml","22.26ml","44.46ml","2.26ml","4.46ml"]
滚动轴承装配在轴上时是采用()公差配合的。 ["基轴制","基孔制","自由"]
肺气肿病人吸入麻醉诱导和吸入麻醉恢复均较正常人为慢,这是因为() ["过度通气通气","FRC增大影响了肺内原有气体的交换速度","胸廓呈膨胀状态","阻力升高","以上都不是"]
火柴试验时,点燃的火柴距病人口部的应为离是() ["60cm","50cm","25cm","15cm","10cm"]
屏气试验,屏气时间多少为正常() ["大于50秒","大于30秒","大于10秒","大于20秒","小于30秒"]
在生产现场打扫地面卫生的人员,必须明确自己的()范围,量、质、期的标准要求,安全注意事项。