运行中组合电器SF6气体年漏气率应≤()

天天题库2019-12-17 15

问题运行中组合电器SF6气体年漏气率应≤()

选项 0.5%/年$; $0.3%/年$; $0.4%/年$; $0.2%/年

答案A

解析

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