无菌盘铺好后()无菌溶液开瓶后未被污染() ["A．有效期4小时","B．有效期2小时","C．有效期12小时","D．有效期24小时","E．有效期7天"]
右心室增大常见于() ["A．二尖瓣狭窄","B．肺源性心脏病","C．肺动脉狭窄","D．肺动脉高压","E．法洛四联征"]
轻度缺氧时吸氧的流量()重度缺氧时吸氧的流量()氧气雾化吸入时氧气流量() ["A．1～2L/min","B．2～4L/min","C．4～6L/min","D．6～8L/min","E．8～10L/min"]
左心房增大多见于下述哪些疾病() ["A．二尖瓣病变","B．主动脉病变","C．动脉导管未闭","D．室间隔缺损","E．左心衰竭"]
皮下注射的进针角度()皮内注射的进针角度()静脉注射的进针角度() ["A．针头斜面与皮肤成5。角刺入","B．针头斜面与皮肤成30°～40°角刺入","C．针头斜面与皮肤成90°角刺入","D．针头斜面与皮肤成20°～25*角刺入","E．针头斜面与胸骨纵轴成45°角刺入"]
气胸时排除胸腔积气的穿刺点()胸腔积液时的穿刺点()
