A.634 B.584 C.551 D.527
A.160kPa B.166kPa C.172kPa D.180kPa
A.流塑 B.硬塑 C.软塑 D.可塑
A.Ⅱ级 B.Ⅲ级 C.Ⅳ级 D.Ⅴ级
A.4050 B.4150 C.4250 D.4350