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Physics Unit15: Laws of Thermodynamics (id: eed5fe88e)

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admin 发表于 2024-2-7 10:18:14 | 显示全部楼层 |阅读模式
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 generates 600 MW oamzpfuj1 tsq*n7-41 awet*8r jr ,d1qf electric powdvik;s-(i;dg p8a+ pler. 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 Carnot efficiency?

A. 33%
B. 37%
C. 46%
D. 54%


参考答案:  C


本题详细解析: 暂无

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