A.1 B.2 C.3 D.4
A、1mm B、2mm C、3mm D、4mm
A.1;0.1% B.2;0.1% C.2;0.2% D.2;0.3%
A.10~20 B.10~30 C.20~30 D.20~40
A.1/3 B.2/3 C.1/2 D.1