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【多选题】
设离散系统如图所示，设【图片】，【图片】时，若要求其稳态误差【图片】,则以下说法中错误的是（）【图片】A.
该系统的开环脉冲传递函数为
B.
该系统的闭环脉冲传递函数为
C.
该系统能稳定工作。
D.
闭环系统稳定时，
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【简答题】Kids already do a lot of learning from s, and we have a lot to share. I think that s should start learning from kids. Now, I do most of my speaking in front of an education crowd -- teachers...
【单选题】Every child should have an older brother he can look up to. I feel sorry for those kids or children who don't care for their older brothers as I do mine. A boy requires understanding, protection, and ...
A.
a good background in education
B.
a patient and understanding attitude
C.
a deep concern for his brother’s future
D.
a lack of friends and social life
【单选题】Every child should have an older brother he can look up to. I feel sorry for those kids or children who don't care for their older brothers as I do mine. A boy requires understanding, protection, and ...
A.
He was fair but demanding.
B.
He was dull and silent.
C.
He was quiet and soft-hearted.
D.
He was reliable and helpful.
【简答题】I think you should consider having kids soon. Your _____ is closing.
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