美国能源有效利用委员会认为美国各家庭有效利用能源的关键是在不同程度上节约光热用量。据调查,美国每个家庭年平均光热费用约1000美元,还可节约30%～50%。主要节能途径:1.对耗电量最大的热水器的使用应保持快速、适时、有效。2.用荧光灯代替白炽灯照明。3.由于电冰箱等耐用家电的效率会逐年降低,使用15年以上应予更新。4.空 The U.S. Commission on Energy Efficient Utilization believes that the key to the effective use of energy by families in the United States is to save light and heat in varying degrees. According to the survey, the annual average cost of light and heat for each family in the United States is about 1,000 US dollars, and it can also save 30% to 50%. Main energy-saving ways: 1. The use of the largest water heater should be fast, timely and effective. 2. Use fluorescent lamps instead of incandescent lighting. 3. Because the efficiency of durable appliances such as refrigerators will decrease year by year, the use of more than 15 years should be updated. 4. Empty