通用变频器的保护功能有很多，通常有（）等。A、欠电压保护 B、过电压保护 C、过电流 发布时间：2019-07-23 00:15 │ 来源：www.tikuol.com 题型：多项选择题 问题： 通用变频器的保护功能有很多，通常有（）等。A、欠电压保护B、过电压保护C、过电流保护D、防失速功能保护E、直接保护
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