A.自感電動勢 B.互感電動勢 C.動生電動勢 D.化學電動勢
A.Σi=0 B.Σi入=Σi出 C.i=E/ΣR D.i1+i2+i3+……+in=0
A.任何二端網(wǎng)絡 B.任何有源二端網(wǎng)絡 C.有源二端口網(wǎng)絡 D.任何二端口網(wǎng)絡