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  3. Standby power is consumption of energy by electrical appliances even when they a

Standby power is consumption of energy by electrical appliances even when they a

游客2023-08-01  34
问题 Standby power is consumption of energy by electrical appliances even when they are plugged off. [br] Standby power consumption accounts for 5 percent of the total amount of electrical power consumption in the United States.
选项 A、Y
B、N
C、NG
答案 B
解析 由题干中5 percent可定位到第三段第二句Energy experts estimate that approximately 5 percent of residential electrical power consumption in the United States is used for standby power.[精析] 数字处设题。本题考查电器在准备状态下的耗电额度。文中指出能源专家估计准备状态下的耗电占美国家用电器消耗总量大约5%，而题干关于准备状态下的耗电占美国电能消耗的5%的说法与原文不符。
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