题目内容

A wind turbine converts wind energy into electrical energy. If the turbine reads 1000 J of wind energy in a single day, the amount of electricity produced in the same time period would be

A. greater than 1000 J because electrical energy is higher quality than wind energy
B. less than 1000 J because some energy will be lost to the environment at the conversion point
C. greater when energy demands are high and less when energy demands are low
D. greater than 1000 J because the efficiency is 120%
E. equal to 1000 J because energy cannot be created or destroyed

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