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प्रश्न
Name a device that prevents loss of energy (or gain) by conduction, convection, and radiation.
एक शब्द/वाक्यांश उत्तर
उत्तर
Thermos flask.
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क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
Name a device that prevents loss of energy (or gain) by conduction, convection, and radiation.
Thermos flask.