5.jpg

5.jpg

A.I1=0.2 A,I2=1A,I3=3 A

B.I1=0.2 A,I2=-0.1A,I3=0.1 A

C.I1=3 A,I2=-2 A,I3=1 A

D.I1=-0.1 A,I2=0.2 A,I3=0.1 A

正确答案是B