In the presence of an open flame or hot
2024-03-11 78次 海船船员 反馈错误 加入收藏 正确率 : 100%
题目内容:
[单选题]In the presence of an open flame or hot surfaces, chlorinated flourocarbon refrigerants decomposes and form .
A.petroleum crystals
B.phosgene gas
C.water vapor
D.carbon monoxide
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