培训者主要通过语言表达形式，系统地向培训对象传播知识和技能是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25512' and id < 2147797 and id<>'2147797' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25512' and id > 2147797 and id<>'2147797' order by id asc limit 5