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Máy lạnh tiêu tốn công 600kJ và thải nhiệt cho nguồn nóng 2000kJ. Hãy tính hệ số làm lạnh của chu trình?

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Máy lạnh tiêu tốn công 600kJ và thải nhiệt cho nguồn nóng 2000kJ. Hãy tính hệ số làm lạnh của chu tr...
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