66.动车组一级检修限度,轮对踏面擦伤深度≤( )。[213010201]

66.动车组一级检修限度,轮对踏面擦伤深度≤( )。[213010201]

A.(A)0.5mm

B.(B)0.6mm

C.(C)0.7mm

D.(D)0.8mm

正确答案是A