A.厚度為50mm,不應(yīng)小于40mm B.厚度為40mm,不應(yīng)小于35mm C.厚度為40mm,不應(yīng)小于30mm D.厚度為50mm,不應(yīng)小于45mm
A.10000 B.12000 C.13000 D.14000