找考题网-背景图
单项选择题

+2.00DC×90°与-2.00DC×180°联合后得到()

A.+2.00DS/-2.00DC×90°
B.+2.00DS/-4.00DC×180°
C.+2.00DS/-4.00DC×90°
D.-2.00DS/+2.00DC×90°
E.-2.00DS/+4.00DC×180°