單項(xiàng)選擇題

某系統(tǒng)的傳遞函數(shù)為G(s)=其零、極點(diǎn)是()

A.零點(diǎn)s=-0.25,s=3;極點(diǎn)s=-7,s=2
B.零點(diǎn)s=7,s=-2;極點(diǎn)s=0.25,s=3
C.零點(diǎn)s=-7,s=2;極點(diǎn)s=-1,s=3
D.零點(diǎn)s=-7,s=2;極點(diǎn)s=-0.25,s=3


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