问题
单项选择题
某单位的汽车喷漆车间采用二氧化碳灭火系统保护。下列关于二氧化碳灭火系统灭火机理的说法中，正确的是（）。
A.窒息和隔离
B.窒息和吸热冷却
C.窒息和乳化
D.窒息和化学抑制
答案
参考答案：B
解析：二氧化碳灭火作用主要在于窒息，其次是冷却。所以，正确答案为B。
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某单位的汽车喷漆车间采用二氧化碳灭火系统保护。下列关于二氧化碳灭火系统灭火机理的说法中，正确的是（）。
A.窒息和隔离
B.窒息和吸热冷却
C.窒息和乳化
D.窒息和化学抑制
参考答案：B
解析：二氧化碳灭火作用主要在于窒息，其次是冷却。所以，正确答案为B。
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