影响二氧化碳排出的呼吸机参数() ["A．RR","B．FiO","C．PIP","D．PEEP","E．Vt"]
镫骨的运动形式是() ["A．中等强度的声音时，镫骨底板是沿镫骨后脚的垂直轴振动","B．内外活动","C．上下活动","D．偏转移动","E．活塞式运动"]
上消化道出血一般多少毫升即可出现柏油样便?
新生儿肺透明膜病的主要治疗方法有哪些() ["A．肺表面活性物质","B．持续气道正压呼吸(CPAP)","C．机械通气","D．纠正酸中毒","E．积极清理呼吸道"]
声波经听骨链传至前庭窗，声压可增加() ["A．1.3倍","B．2.3倍","C．3.3倍","D．4.3倍","E．5.3倍"]
粪便检查的主要目的有哪些?
