哪项不是自然制冷剂？

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试卷: LEED v4 GA模拟题A卷中文[查看]
哪项不是自然制冷剂？What is NOT a natural refrigerant?
A: HFC
B: HC
C: NH3
D: CO2

参考答案: A

本题解释:
正确答案：A
系统解析: 暂无解析
A:Make sure you do not confuse HC, which is good refrigerant, with HFC or HCFC, which are refrigerants that cause environmental issues.

Notes:
There are five refrigerants that are benign to the earth’s atmosphere. They are:

CO2 - Carbon dioxide
H2O - Water
NH3 - Amonia
HC - Hydrocarbons, such propane, butane, ethane, isobutene, and isopentane
Air