單項(xiàng)選擇題

某系統(tǒng)的傳遞函數(shù)為
,該傳遞函數(shù)有()

A.1個(gè)零點(diǎn),3個(gè)極點(diǎn)
B.1個(gè)零點(diǎn),2個(gè)極點(diǎn)
C.3個(gè)零點(diǎn),1個(gè)極點(diǎn)
D.2個(gè)零點(diǎn),1個(gè)極點(diǎn)


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