单项选择题
A.楦头前跷太低，头型太小所引起 B.大底长度比鞋底长太多 C.鞋口没有禁边，拔楦时皮料延伸 D.大底鞋头跷度比楦头跷
A.30° B.45° C.60° D.75°
A.包辊→翻炼→加硫→吃粉 B.包辊→吃粉→翻炼→加硫 C.翻炼→加硫→吃粉→包辊 D.包辊→翻炼→吃粉→加硫