A.0.5%~1.2% B.0.6%~1.0% C.0.5%~1.0% D.0.5%~1.2%
A.宜為2~4m,不大于3.5mm B.宜為2~4m,不小于3.5mm C.宜為3~5m,不小于3.5mm D.宜為3~5m,不大于3.5mm
A.不宜超過1.2m,不應(yīng)超過3.5mm B.不宜小于1.2m,不應(yīng)小于3.5mm C.不宜小于1.2m,不應(yīng)超過3.5mm D.不宜超過1.2m,不應(yīng)小于3.5mm