单项选择题 【简答题】15.3写出丙烯与苯在HF存在下反应制备异丙苯的反应机理. 15.3 Outline all steps in a reasonable mechanism for the formation of isopropylbenzene from propene and benzene in liquid HF (just shown). Your mechanism must account for the product being isopropylbenzene, not propylbenzene.

判断题 【判断题】“国家生态文明教育基地”对现役军人、残疾人和有组织的中小学生实行免费开放

名词解释 【名词解释】策略