【判断题】
空气、变压器油、SF6都可用做绝缘和灭弧介质
A. 对
B. 错
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答案
A
解析
暂无解析
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【判断题】
当UPS逆变器发生异常状况，像温度过高、短路现象、输出电压异常或负载超载等情形，超过逆变器可承受范围时，逆变器会自动切断以防止损坏。若此时市电正常时，静态开关会将电源供应转为由备用电源（旁路电源）输出给负载使用
A. 对
B. 错
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