依据一次能源的不同，发电厂可分为(    )。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69520' and id < 4503932 and id<>'4503932' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69520' and id > 4503932 and id<>'4503932' order by id asc limit 5