單項選擇題勵磁系統(tǒng)電壓響應時間應滿足:上升時間(強勵)不大于()s;下降時間(強減)不大于()s。

A.0.02,0.02
B.0.025,0.02
C.0.025,0.025
D.0.02,0.025


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