链霉素过敏性休克抢救静脉注射() ["去甲肾上腺素","氢化可的松","异丙肾上腺素","毛花苷C","10%葡萄糖酸钙"]
颈内动脉系统() ["供应大脑半球内侧面3/4部分","供应大脑半球背外侧面2/3部分","基底动脉的终支是","供应脑干和小脑","供应眼部和大脑半球前3/5部分"]
接触性泻药的作用包括() ["粘膜透过性增加","改变血浆中电解质的水平","释放PG,使电解质分泌增加","肠内渗透压升高","直肠反射性蠕动增强"]
羧苄西林和下列何药混合注射会降低疗效() ["庆大霉素","磺胺嘧啶","青霉素G","红霉素","林可霉素"]
2岁小儿用硫贲妥钠做基础麻醉时,药物应通过什么途径给予() ["静脉注射","静脉点滴","肌肉注射","皮下注射","直肠给药"]
某厂转炉装入量为120吨,氧气流量为25000m3/h,供氧时间18分,计算供氧强度是多少?