控制回路电缆截面的选择,应保证最大负荷时,控制电源母线至被控设备间连接电缆的电压降不应超过额定二次电压的()。A.5%;B10%;C.12%;...

作者: rantiku 人气: - 评论: 0
问题 控制回路电缆截面的选择,应保证最大负荷时,控制电源母线至被控设备间连接电缆的电压降不应超过额定二次电压的()。
选项 A.5%; B10%; C.12%; D.15%.
答案 C
解析

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