单选题The flash point of a liquid refers to the temperature （）Aat which a liquid will give off inflammable vaporsBat which a liquid will burn steadilyCat which a liquid will explodeDthat a liquid must reach before it will flow readily
单选题
The flash point of a liquid refers to the temperature （）
A
at which a liquid will give off inflammable vapors
B
at which a liquid will burn steadily
C
at which a liquid will explode
D
that a liquid must reach before it will flow readily
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