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法国:据法国的一项调查显示,如果一栋小型住宅注意使用太阳能,或加装房屋隔热层,它的热水成本可以降低50％到60％,取暖成本可以降低25％到30％。为此,法国有关部门正在采取措施鼓励居民对住宅进行节能改造。
France: According to a French survey, if a small house is not solar-powered or home-built, its hot water costs can be reduced by 50% to 60% and heating costs by 25% to 30%. To this end, the French authorities are taking steps to encourage residents to carry out energy-saving residential transformation.