主页
学科
搜索
账户
常见问题
当前学科:药物分析
题目:
单选
芳酸类药物的共性为()
A . 酸性
B . 碱性
C . 水解反应
D . 呈色反应
E . 沉淀反应
答案:
<查看本题扣1积分>
查看答案
答案不对?请尝试站内搜索
推荐知识点:
破坏臭氧层的物质主要存在于含有破坏臭氧层物质的()中。
需要扩大检索范围时,如何调整检索策略?
Write down the numbers of the topic sentences in the following passages. ①If you hadn't known them, you would have thought Joe and Jim were quite alike. ②They were both tall and wore long and fair hair. They both walked with a steady stride (坚定的步伐). ③They both spoke in a deep voice that made them selves seem much older than they really were. ④Both of them wore dark clothes as a rule, and they liked light coloured ties. ⑤But that was all the likeness they had. ⑥In other things they were sharply different. ⑦Joe was considerate and helpful, and everyone liked him. ⑧Jim, however, was very selfish and often flared into terrible anger (勃然大怒) at little things that displeased him. ⑨Alike as Joe and Jim were on the surface, they were really very different in nature.
固定适宜铁口的角度的意义在于()。
肿瘤的代谢特点有()A.蛋白质合成代谢超过分解代谢B.合成DNA的能力增强C.糖无氧酵解增强D.合成RNA的能力增强E.蛋白分解酶增强
面包成品出现蟾蜍皮的现象是()。
氨系统中氨的含水量大于2%时,会造成()高于正常值、造成制冷量下降等不良现象
电气二种票没有延期手续一栏,工作如需延期时,应重新签发工作票。
适宜在早春和秋冬采集的药材是()