本题目来源于试卷: Physics Unit15: Laws of Thermodynamics，类别为 通用国际物理
[单选题]
A coal-fired plant gex w+. ue)ru8qho)a 7 txkbcnl k;;)3ehvjb0d;nerates 600 MW of electric power. The plant uses $4.8 \times 10^{6} \; kg$ of coal each day. The heat of combustion of coal is $3.3 \times 10^7 \; J/kg$. The steam that drives the turbines is at a temperature of $300 ^{\circ}C$, and the exhaust water is at $37 ^{\circ}C$. What is the overall efficiency of the plant for generating electric power?
A. 33%
B. 37%
C. 46%
D. 54%
参考答案: A
本题详细解析:
暂无
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