What is the substance called which can readily be converted from a liquid into a vapor, and also from a vapor into liquid with a reasonably narrow range of pressure?（）<br>A:Refrigerator<br>B:Refrigerant<br>C:Cooling medium<br>D:Brine

What is the substance called which can readily be converted from a liquid into a vapor, and also from a vapor into liquid with a reasonably narrow range of pressure?（）
A:Refrigerator
B:Refrigerant
C:Cooling medium
D:Brine

出自：海船船员证

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