An air-conditioner (空调) makes us cool in summer and warm in winter. Such a machine is quite hard to make. However, a middle school with 920 students made a decision to ask its students to make some by themselves.To support the challenge, teachers gave the lessons on heating and ...
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improperly sealed windows and poor insulation can pose serious problems for many home and business owners in Chicago. Mid-City Heating, Ventilation & Air Conditioning Inc. provides complete HVAC system servicing including sales, installation, maintenance and repair, and offers numerous practical solutions...
自（）起，除采用协议供货和定点采购方式实施的小额零星采购、由集中采购机构统一组织的批量集中采购外，各单位按项目实施的集中采购目录以内或者采购限额标准以上的货物、工程、服务采购，均应当在采购网中央主网和本单位门户网站政府信息公开专栏公开采购意向。
a已经培训了数千名教师 Has already trained several thousand teachers[translate] aIt is also a time to return home to see family and friends for most people 它也是时候返回在家为多数人看家庭和朋友[translate] athere is an air conditioner in my room 有空调在我的屋子里[translate]...
Find out how an air conditioner removes heat and humidity from indoor air to keep your home cool and comfortable.