Thursday, September 22, 2022
Thursday, September 15, 2022
Wednesday, September 21, 2022
问题:单选题Molish反应的现象是()A 酸层显蓝色B 酸层显紫色C 界面出现蓝色环D 界面出现紫色环E 供试液层显紫色...
Tuesday, March 7, 2023
问题:单选题哪组溶剂不适合结晶法()A 水/丙酮B 乙醇/乙醚C 乙醚/水D 乙醇/氯仿E 水/乙醇...
Monday, May 15, 2023
Tuesday, September 20, 2022
Saturday, September 17, 2022
问题:单选题苦参中的生物碱所具有的生物活性是()A 镇痛作用B 抗菌作用C 利尿作用D 强心作用E 抗肿瘤作用...
Wednesday, July 12, 2023
问题:亲脂性有机溶剂如石油醚为提取溶剂提取药材时,最适宜采用的提取方法是()...
Tuesday, September 20, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
Tuesday, September 20, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
问题:单选题满山红中祛痰的有效成分是()A 槐二醇B 芦丁C 金丝桃苷D 杜鹃素E 槲皮素...
Friday, June 2, 2023
问题:单选题有抗真菌活性的是()A 巴豆苷B 黑芥子苷C 苦杏仁苷D 山慈菇苷E 芦荟苷...
Wednesday, May 3, 2023
Thursday, September 22, 2022
Thursday, September 22, 2022
问题:单选题碱提取酸沉淀可以提取纯化()A 黄酮B 三萜C 甾体D 生物碱E 皂苷...
Wednesday, May 3, 2023