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【单选题】
将1500 kg.h,80°C的硝基苯通过换热器冷却到40°C,冷却水初30°C,出口温度不超过35°C,硝基苯比热为1.38kJ.kg.K,则换热器的热负荷为( )。A.
19800 kJ.h;
B.
82800 kJ.h;
C.
82800 kw;
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