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ΪʲôȩҪȡůҪ
ȩһ̿Ϣǵ֪ȷλΣܶ˵ѾܶЩ˻֪ҿȥʹã һլȩŨÿ׿дﵽ0.08-0.09mg/m3ʱͯͻᷢ΢ լڿмȩﵽ0.15mg/m3ʱζͲʸУ լȩﵽ0.5mg/m3ʱɴ̼۾᣻ ġլȩﵽ0.6mg/m3ʺʻʹŨȸʱŻˮף 塢լȩﵽ30mg/m3ʱ Ұ֢о2009512չһоɹʾƵӴȩѪլܰͰȰ֢ʱȽӴȩٵ˸ߺܶоԱ 2.5 ȩͼȩ֬нӴȩ߱Ȼߵʸ37%оԱڽӴȩ˻ϻܰլ෢Թլ԰ѪⰩ֢ȩж֢״ͬŨȼȩж֢״ ʵйȩֳصоȩ½Դ ΪʲôȩҪȡůҪ õڴȩһҪȥôΪʲôȩһҪڶȥ ¶ÿ1ȩӷٶȾͻ0.4Ϊʲô·³ȩζرµת˹ůװůµԭߡȩůٶȻ϶ŴڿͨڼȩۼͳΣ彡 ϳȩ 1ɫֲȩǧֲꣻ 2ƤдȩǺǺ뷨Բ 3̿ȩԭͷųȾ

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