实验室中常用的氧气钢瓶颜色为（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30405' and id < 2457986 and id<>'2457986' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30405' and id > 2457986 and id<>'2457986' order by id asc limit 5