CRH380B和CRH380B(L)轮对车轮踏面擦伤(D>840mm),一级修程擦伤长度小于等于30mm,

CRH380B和CRH380B(L)轮对车轮踏面擦伤(D>840mm),一级修程擦伤长度小于等于30mm,

A.正确

B.错误

正确答案是A