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The closed－loop system differs from the open－loop system by .

2020-09-18 20:44:15 资格考试 阅读

问题详情

A.the lack of a feedback

B.the presence of a feed back

C.the lack of a computer

D.the presence of a computer

请帮忙给出正确答案和分析，谢谢！

参考答案

考点：