【单选题】丁醇与2-丁醇互为同分异构体,这种现象属于
【简答题】Translate the following paragraphs into Chinese.
【判断题】调类和调值是“名”与“实”的关系,调值是声调的实际读音,调类是声调的名称。
【简答题】Translate the following letters into Chinese.
【简答题】Translate the following letter into English.
【简答题】Translate the following letters into English.
【单选题】丁醇与2-丁醇互为同分异构体,这种现象属于