问题
单项选择题
0il fires are best extinguish by（）.
A.cutting off supply of oxygen
B.removing the fuel
C.cooling below the ignition temperature
D.spraying with water
答案
参考答案：A
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0il fires are best extinguish by（）.
A.cutting off supply of oxygen
B.removing the fuel
C.cooling below the ignition temperature
D.spraying with water
参考答案：A