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剩余动作电流小于或等于0.3A的RCD属于高灵敏度RCD。 答案:× 224 时间继电器的文字符号为KM。 答案:× 225 时间继电器的文字符号为KT。 A. 正确 B. 错误 相关题库:2020低压电工全国版 > 下载刷刷题APP,拍照搜索答疑 > 手机使用 分享 反馈 收藏 举报 参考答案: A 复制 纠错 举一反三 软组织...
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