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【简答题】
人的视网膜上有两种视觉细胞,一种叫 ,另一种叫 。 细胞接受强光刺激,并能辨别颜色; 细胞接受弱光刺激,其中的感光物质是 。
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举一反三
【判断题】If the number of closed-loop poles is the same as the number of open-loop poles, then the number of individual root-locus branches terminating at finite open-loop zeros is equal to the number m of the...
A.
正确
B.
错误
【单选题】The closed loop system differs from the open-loop system by the____.
A.
lack of a feedback
B.
presence of a feedback
C.
lack of a computer
D.
presence of a computer
【单选题】The closed-loop system differs from the open-loop system by ______.
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
【判断题】The Nyquist stability criterion determines the stability of a closed-loop system from its open-loop frequency response and open-loop poles.
A.
正确
B.
错误
【简答题】Open loop control system
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