+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°
出自:眼科住院医师