A.+4.50-1.50×90 B.+4.50-1.50×180 C.+4.50+1.50×180×180 D.-4.50-1.50×180
A.+1.50-3.50×180或-2.00+3.50×90 B.+1.50-3.50×180 C.-2.00+3.50×90 D.+1.50-3.50×90或-2.00+3.50×180
A.-4.25-0.50×180 B.-4.75-0.50×90 C.-4.25-0.50×90 D.-4.25-1.00×90