下列物质不属于合金的是（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30744' and id < 2475996 and id<>'2475996' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30744' and id > 2475996 and id<>'2475996' order by id asc limit 5