单项选择题

CRH5A型动车组空气弹簧橡胶隔膜龟裂一、二级修深度和长度最大分别是()。

A.0.5mm,30mm;1mm,30mm
B.1mm,30mm;1mm,30mm
C.1.5mm,30mm;1.5mm,30mm
D.1mm,30mm;1.5mm,30mm

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