下列不属于光系统的是（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29826' and id < 2420744 and id<>'2420744' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29826' and id > 2420744 and id<>'2420744' order by id asc limit 5