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单项选择题

电气设备的(   )是指在规定的周围环境温度和绝缘材料允许温度下允许通过的(   )。
A、额定电压、最大电压值
B、额定容量、最大容量值
C、额定电流、最大电流值
D、额定容量、最大电流值

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