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为了节约用电用水,许多家庭都安装了电表水表。但是它们是不是在准确地执行自己的任务呢?您可以用下面的方法去检验。电和水的消耗都是用“度”来表示的。通常说的一度电,就是指用电器具消耗功率为1000瓦小时。把一只100瓦的灯泡连续开一小时,或把一只25瓦的灯泡连续开4小时,观察电表上的字码,如果正好走0.1度,那么,这只电表是可靠的。考察时最好选用
In order to save electricity, many households have installed meter water meters. But are they performing their tasks accurately? You can use the following method to test. Electricity and water consumption are expressed in degrees. Generally referred to as electricity, it means that the power consumption of electric appliances is 1000 watt hours. Turn on a 100-watt light bulb for one hour, or turn a 25-watt light bulb on for 4 hours. Observe the code on the meter. If it is just 0.1 degree, then the meter is reliable. The best choice for inspection