Monday, September 12, 2022
苯并噻嗪类药物易被氧化,这是因为()A、低价态的硫元素B、环上N原子C、侧链脂肪胺D、侧链上的卤素原子...
Friday, November 25, 2022
巴比妥类药物与重金属离子的反应是由于结构中含有丙二酰脲基团。...
Tuesday, September 12, 2023
取盐酸氟奋乃静片20片(规格2mg),除去糖衣后精密称定(2.0...
Tuesday, September 13, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
Tuesday, September 13, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
Saturday, September 17, 2022
重氮化反应速度的快慢与芳伯氨基的碱性强弱有关。碱性强反应速度就快...
Tuesday, September 13, 2022
《中国药典》现行版规定测定液体的相对密度时温度应控制在()...
Tuesday, September 13, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
四环素差向异构化是由于A环上手性碳原子C<sub>4</sub>...
Thursday, September 15, 2022
乙酰水杨酸用中和法测定时,用中性乙醇溶解供试品的目的是为了()。A、防止供试品在水溶液中滴定时水解B、防腐消毒C、使供试品易于溶解D、控制pH值E、减小溶解度...
Wednesday, November 16, 2022
Saturday, September 17, 2022
Tuesday, September 13, 2022
中国药典正文中所收载药品或制剂的质量标准的内容包括()。A、类别B、性状C、检查D、鉴别E、含量测定...
Tuesday, September 12, 2023
生物活性强的药品含量测定应首选()A、色谱法B、光谱法C、容量分析法D、酶分析法E、生物检定法...
Saturday, September 17, 2022