A.正數(shù) B.負數(shù) C.零 D.無窮大
A.電感量加大、品質(zhì)因數(shù)減小 B.電感量減少、品質(zhì)因數(shù)減少 C.電感量加大、品質(zhì)因數(shù)加大 D.電感量減少、品質(zhì)因數(shù)加大
A.3000 B.1500 C.1000 D.750