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【单选题】
带有速度、电流双闭环调速系统,在启动时速度调节器处于()状态。
A.
调节
B.
截止
C.
饱和
D.
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【单选题】以下 封装结构中属于球型引脚的是
A.
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B.
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C.
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D.
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A.
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B.
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C.
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D.
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A.
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A.
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B.
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C.
根部
D.
中上部
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