CRH380B型动车组制动盘偏磨限度(两摩擦环厚度差)()

CRH380B型动车组制动盘偏磨限度(两摩擦环厚度差)()

A.≤2mm

B.≤4mm

C.≤3mm

D.≤1mm

正确答案是A