硅钢片中硅的含量是适量的，一般是加（   ）。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69320' and id < 4487831 and id<>'4487831' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69320' and id > 4487831 and id<>'4487831' order by id asc limit 5