2~3岁幼儿的呼吸次数() ["40~45次/分","30~40次/分","25~30次/分","20~25次/分","18~20次/分"]
在大多数类型的组织损伤中血管通透性升高的速发反应主要是下列哪种因素影响() ["补体","细菌毒素","过敏毒素","组胺","坏死分解产物"]
油田开发不必依据详探成果和必要的生产性开发试验。
心率适合的冠心病人,麻醉时选用下述肌松药,不妥的是() ["琥珀胆碱","罗库溴铵","泮库溴铵","维库溴铵","阿曲库铵"]
婴儿的心率() ["70~90次/分","80~100次/分","100~120次/分","110~130次/分","120~140次/分"]
原煤仓疏松机的使用注意事项有哪些?