12月5日，拉萨市城市供暖试点工程开通（运行）仪式在拉萨市国家级经济开发区举行。当日，拉萨市城市供暖试点工程开通（运行）仪式在拉萨市国家级经济开发区举行。拉萨供暖试点工程于2012年4月开工，目前已按计划让全市40%的家庭用上暖气，预计2013年实现供暖全覆盖。新华社发（刘坤摄） On December 5,,Lhasa urban heating pilot project opened(operation)Ceremony in Lhasa in national economic development zone held.the,Lhasa urban heating pilot project opened(operation)Ceremony in Lhasa in national economic development zone held.Lhasa heating pilot project started in April 2012,At present already scheduled for the 40% of the family use heating,In 2013 is expected to achieve complete coverage of heating.The xinhua news agency hair(Yang ch perturbation)