Which of the listed characteristics can be applied to R- 12 vapor?（）<br>A:It is corrosive<br>B:It is odorless<br>C:It is visible as h blue fog<br>D:It has a distinctive taste

Which of the listed characteristics can be applied to R- 12 vapor?（）
A:It is corrosive
B:It is odorless
C:It is visible as h blue fog
D:It has a distinctive taste

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