character: Dr. Brown
topic: Refrigeration Cycles in Industry
grade: 12
subject: Chemistry
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character: Mr. Smith
topic: Thermodynamics Principles in Refrigeration
grade: 12
subject: Chemistry
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character: Ms. Johnson
topic: Environmental Impact of Refrigerants
grade: 12
subject: Chemistry
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character: Dr. Lee
topic: Applications of Refrigeration in Food Industry
grade: 12
subject: Chemistry
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