A.+50mm,-200mm B.±50mm C.±200mm D.+200mm,-50mm
A.1:0.05~1:0.07 B.1:0.1~1:0.15 C.1:0.07~1:0.1 D.1:0.1~1:0.13
A.0.8m B.1m C.1.5m D.2m