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频率的一次调整是( )

单选题
2021-09-06 21:22
A、由发电机组的调速系统完成的
B、由发电机组的调频系统完成的
C、由负荷的频率特性完成的
D、由无功补偿设备完成的
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正确答案
A

试题解析

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