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| 成為伊莉的版主,你將獲得更高級和無限的權限。把你感興趣的版面一步步地發展和豐盛,那種滿足感等著你來嚐嚐喔。 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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