A.劃傷 B.腐蝕 C.變形 D.折斷
A.150~170N•m,675~700N•m B.675~700N•m,150~170N•m C.155~175N•m,670~700N•m D.670~700N•m,155~175N•m
A.1mm B.2mm C.3mm D.4mm