railway RRB JE (CBT I + CBT II) Mock Test 2024 Refrigeration and Air Conditioning Refrigeration Cycles and Devices

उपरोधन एक ______ तापीय धारिता प्रक्रिया है।

1
घटती हुई
2
बढ़ती हुई
3
स्थिर
4
अनियमित
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