选用导体的长期允许电流不得小于该回路的()。A.短路电流有效值;B.持续工作电流;C.短路全电流;D.接地电流。

作者: rantiku 人气: - 评论: 0
问题 选用导体的长期允许电流不得小于该回路的()。
选项 A.短路电流有效值; B.持续工作电流; C.短路全电流; D.接地电流。
答案 B
解析

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