链霉素属于下列哪类药物？（ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30899' and id < 2485567 and id<>'2485567' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30899' and id > 2485567 and id<>'2485567' order by id asc limit 5