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这个月的电费单的电表数字减去上一次的电费单的数字,就是这个月的用电量。再用电费的钱数(欧元)÷电表数字,得数就是每度电的费用比如:这个月的电费单的数字是:34567890。电费是20欧元。上一次的电费单的数字是34567700。就用34567890—34567700=192这个数字就是这个月的用电量也就是:每千瓦/小时。也叫:度。再用电费的钱数20÷192=0.104欧元/每度电");
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