单项选择题
A.AGC调节 B.功率闭环调节 C.一次调频 D.二次调频
A.0.2 B.0.3 C.0.4 D.0.5
A.20s B.30s C.45s D.60s
A.0.95 B.0.9 C.0.85 D.0.8
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