第7题: [单项选择]在《中国药典》中,盐酸美他环素含量测定的方法为 A. 碘量法 B. 汞量法 C. 酸碱滴定法 D. 紫外分光光度法 E. 高效液相色谱法 参考答案:E 答案解析: [解析] 本题考查四环素的含量测定。
《中国药典》规定四环素原料药及注射用四环素采用HPLC测定含量,而四环素片和四环素胶囊采用UV法测A276来确定含量
第17题: [单项选择]急性心肌梗死TnT变化规律() A. 起病2小时内升高,12小时高峰,24~48小时恢复正常 B. 起病3~4小时内升高,11~24小时高峰,7~10日恢复正常 C. 起病3~4小时升高,24~48小时高峰,10~14天恢复正常 D. 起病4小时升高,16~24小时达高峰,3~4日恢复正常 E. 起病6~12小时升高,第2~3天达高峰,1~2周恢复正常 参考答案:E
第34题: [单项选择]Questions 11 to 18 are based on the conversation you have just heard. A. They like to listen to the record again and again. B. They are happy she plays a different song this time. C. This song is always their favorite one. D. They are fed up with Mary’s songs. 参考答案:D 答案解析:[听力原文] W: I wish Mary would put on a different record. She has played that song a thousand times.