复制电工高级理论复

旋转变压器的主要用途是（　　）。

发布于 2021-03-05 22:54:03

【单选题】
A 自动控制系统中的随动系统和解算装置
B 变压变流
C 调节电机转速
D 输出电力传送电能

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