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【简答题】
2012年7月1日起，全国绝大部分省市开始实行居民阶梯电价。共分三档，第一档为基础电量，价格不变，第二档每度涨5分，第三档涨3。其具体内容包括：第一阶梯为基数电量，此阶梯内电量较少，电价较低；第二阶梯电量较高，电价较高一些；第三阶梯电量更多，电价更高。这不仅让市民更加合理用电，更提升了节能家电的关注度，刺激了销量，同时也加速了市民家里“电老虎”的淘汰，节能型产品将再次掀起一波销售高潮。结合材料，分析实行阶梯电价可能对居民生活、生产的影响。
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