消费者权益保护法中最核心的一项原则是（    ）。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='50913' and id < 3255146 and id<>'3255146' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='50913' and id > 3255146 and id<>'3255146' order by id asc limit 5