单选题A petroleum liquid has a flash point of 135°Fahrenheit. This liquid is classed as a grade （）.AB flammable liquidBC flammable liquidCD combustible liquidDE combustible liquid
单选题
A petroleum liquid has a flash point of 135°Fahrenheit. This liquid is classed as a grade （）.
A
B flammable liquid
B
C flammable liquid
C
D combustible liquid
D
E combustible liquid
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