单项选择题
A.零件标签 B.专用件标识 C.追溯标签 D.手配2传票
A.转向节轴颈 B.前轴主销 C.转向节凸缘
A.≤30ppb B.≤100ppb C.≤50ppb D.≤10ppb
微信扫一扫,加关注免费搜题
