问题
单项选择题
An important step in fighting any electrical fire is to（）.
A.stop ventilation
B.stop the vessel
C.de-energize the circuit
D.apply water to extinguish the fire
答案
参考答案：C
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An important step in fighting any electrical fire is to（）.
A.stop ventilation
B.stop the vessel
C.de-energize the circuit
D.apply water to extinguish the fire
参考答案：C