(单选题)19: 可与胆甾醇生成较稳定的难溶性分子复合物的是 A: 强心苷 B: 甾体皂苷 C: 蒽醌苷 D: 三萜皂苷 ...
(单选题)13: 从中药中提取二萜内酯类成分可用下列哪种方法 A: 水提取醇沉淀法 B: 酸水加热提取加碱沉淀法 C: 碱水加热提取加酸沉淀法 D: 水蒸气蒸馏法 E: 升华法 ...
(单选题)7: 欲从一中药材中提取一种二糖苷,一般可采用 A: 冷水浸渍 B: 渗漉法水提 C: 氯仿回流 D: 70%乙醇回流 ...
(单选题)1: 从药材中依次提取不同极性(弱→强)的成分,应采用的溶剂顺序是 A: 水→乙醇→乙酸乙酯→乙醚→石油醚 B: 乙醇→乙酸乙酯→乙醚→石油醚→水 C: 乙醇→石油醚→乙醚→乙酸乙酯→水 D: 石油醚→乙醚→乙酸乙酯→乙醇→水 E: 石油醚→乙酸乙酯...
(问答题)19: 英译汉:He talks as though he were a teacher. ...
(单选题)13: The commission is made up of five people, ______ two women. A: including B: included C: involving D: involved ...
(单选题)7: It is his first visit to Europe as the ______. A: preside B: president C: resident D: presidency ...
(单选题)1: 交际英语(1-5):— Thank you so much for your lovely gift.— ____________. A: Never mind. B: I’m glad you like it. C: Please don’t say so. D: No, it’s not so good. ...
38: 卫生监督法律关系的主体种类包括##,##,##,##。 ...
(问答题)32: 简述学校预防性卫生监督内容? ...