腰椎间盘突出病人踝反射减弱或消失,说明受累神经根是() ["腰3","腰4","腰5","骶1","骶2"]
患者,24岁,女性。头外伤后昏迷半小时,CT检查正常,数月后出现无故骂人,易怒,随地便溺,自私,轻浮,不关心家人。该患者最可能的诊断是() ["精神分裂症","分裂样精神病","脑外伤后人格改变","躯体疾病所致精神障碍","癫痫所致精神障碍"]
氧传感器端子数可能会有()。 ["单线","双线","三根线","四根线"]
男,46岁,外伤后左下颈搏动性肿块,CT如图所示,最可能的诊断为() ["左颈部血管瘤","左颈动脉体瘤","左颈静脉球瘤","左颈总动脉假性动脉瘤","左颈部动、静脉畸形"]
下列()情况会导致配气相位的变化。 ["正时齿(链)轮的连接花键","液力挺柱发动机的机油压力","凸轮轴变形、磨损","正时链的磨损或正时带的老化"]
二次污染物