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| 若瀏覽伊莉的時侯發生問題或不正常情況,請使用Internet Explorer(I.E)。 In the US mid west area, we have a central heating system, i.e. gas burning furnace. It keeps the whole house as warm as the thermostat setting set to (70 degree F or 22 degree C). In addition, we have a small electric heater in a bed room for a small baby to keep that room warmer than the rest of the house. The gas bill for the winter month averaged to about $200 US dollars a month while electric bill would have additional $50 US dollars a month due to the electric heater. |
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