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A thermal power plant has an efficiency of 0.4. If 0.6 kg of coal is burnt to generate 1 kWh, the calorific value of coal is | |
A. | about 3500 kcal/kg [Correct Answer] |
B. | about 2500 kcal/kg [Wrong Answer] |
C. | about 1500 kcal/kg [Wrong Answer] |
D. | about 7500 kcal/kg [Wrong Answer] |