下列数据中不属于交变电流有效值的是[ ]
A.交流电表的示数
B.灯泡的额定电压
C.电容器的耐压值
D.保险丝的额定电流
答案：C
Which is a disadvantage of Halon as a fire extinguishing medium?（）
A.Conducts electricity
B.Difficult to store
C.Large volume necessary to be effective
D.Ineffective in powdered metal fires
受体
