A:3x+y=0
B:2x﹣1=4
C:2x2﹣y=2
D:2x+y=3z
根据欧姆定律公式I= UR ,可变形得到R= UI 。对此,下列说法中正确的是()
—Why do yo u want to see t he pandas?
— they are very friendly and cute.