当汽车的驱动力()附着力时,驱动轮将出现打滑现象。 ["小于","大于","反比于","正比于"]
X线胶片卤化银颗粒平均大小为(). ["1.0mm","1.0μm","1.71μm","1.71mm","2.8μm"]
使用呼吸机常用的呼吸方式有() ["机械控制通气(CMV)","同步间歇指令通气(SIMV)","呼吸末正压呼吸(PEEP)","压力支持通气(PSV)","持续气道正压呼吸(CPAP)"]
使用人工呼吸机应注意() ["观察患者呼吸与机器是否同步","保持呼吸道通畅","观察患者的意识状态和生命体征","定时检查气管插管与呼吸机连接是否脱出","雾化器隔日清洗并更换雾化液"]
5·4A号型男西服后衣长档差为2cm,号型为160/80A的后衣长为68cm,则号型为180/96A的后衣长为()cm。 ["A、70","B、72","C、74","D、76"]
实现步进电动机通电环形分配的三种常用方法是:()()()