向心推力轴承在传动机构中是承受()载荷的。 ["径向","轴向","切向","法向"]
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"]
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"]
正确使用、维护和保管所使用的工器具及()用品、用具,并在使用前进行检查。