下列物质进行一氯取代反应，产物只有两种的是

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='21884' and id < 1912965 and id<>'1912965' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='21884' and id > 1912965 and id<>'1912965' order by id asc limit 5