三羧酸循环最重要的生理意义在于() ["使糖、脂肪、氨基酸彻底氧化供能","作为糖、脂肪、氨基酸互变的枢纽","消除物质代谢产生的乙酰-CoA,以防在体内堆积","消除糖酵解产生的乳酸,以防产生酸中毒","产生CO2供机体生物合成"]
创伤病人麻醉诱导时发生误吸,可采取() ["预先放置粗胃管吸引","预先使用H受体阻滞剂","表面麻醉清醒气管插管","压迫环状软骨法","预先诱发呕吐"]
AIDs的传染源是() ["性乱人群","患AIDS的患者与HIV携带者","静脉毒瘾者","同性恋者","HIV实验室工作人员"]
A1Ds(获得性免疫缺陷综合征)的病原体属于() ["衣原体","支原体","真菌","细菌","病毒"]
引起主动脉瓣关闭不全最常见的病因是() ["A.风湿性心脏病","B.主动脉窦瘤","C.马凡综合征","D.升主动脉粥样硬化","E.主动脉瓣脱垂"]
导管内癌()浸润性导管癌()硬癌()鳞状细胞癌()