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( ) 1a
1
1b 1c
2 T1 T2 2 A1 A2 2 T1 T2 K1(I1)=K2(I1) G=Uo/U1=I3R3/I2R2=(R3/R2)[K1(I1)/K2(I1)]=R3/R2 T1 T2