A.連續(xù)式剪刀撐 B.可調(diào)托撐 C.三字斜撐 D.剪刀撐
A.1m~1.2m B.1.3m~1.5m C.1.4m~1.6m D.1.6m~1.8m
A.1mm B.1.5mm C.2mm D.3mm