强心苷类在酸性条件下加热时易发生脱水反应，这是由于结构中存在

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30242' and id < 2446430 and id<>'2446430' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30242' and id > 2446430 and id<>'2446430' order by id asc limit 5