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如果根轨迹与虚轴相交,表示系统闭环特征方程式中含有纯虚根,系统处于______状态。

单选题
2021-09-01 16:43
A、相对稳定
B、临界稳定
C、衰减周期
D、增强周期
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正确答案
B

试题解析

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