单项选择题
CRH380B型动车组一级修车底作业时,升弓气囊可见内部帘布层或龟裂深度〉()且长度〉()时,则需要更换。
A.1.2mm,15mm
B.1.2mm,25mm
C.1.5mm,15mm
D.1.5mm,25mm
点击查看答案&解析

单项选择题
A.1.2mm,15mm
B.1.2mm,25mm
C.1.5mm,15mm
D.1.5mm,25mm
微信扫一扫,加关注免费搜题