有关通气储备,下列哪项是正确的() ["通气储备<86%为通气功能不佳","通气储备<70%为通气功能严重受损","临床上主要用于估价通气储备","有严重心肺疾患者不宜进行此项检查","A~D"]
测量粗加工的或未经加工的毛坯表面,应选用()量具。 ["标准的","精密的","精度低的"]
关于肺静态顺应性,下列哪种说法不对() ["正常值是60~100cmH20","潮气量/(平台压-PEEP)","潮气量/(峰压-PEEP)","肺实质病变时顺应性下降","它也受胸廓顺应性的变化的影响"]
肺功能检查时第一秒用力呼出气量占用力肺活量的多少为正常() ["≥40%","≥50%","≥60%","≥70%","≥80%"]
固定式联轴节的作用是把两轴()地连接起来。 ["牢固","拉索","浮动"]
临时工()接、拆临时电源和进行停送电操作。