92.一级检修限度,轮对踏面剥离一处,长度≤( )。[211010201]

92.一级检修限度,轮对踏面剥离一处,长度≤( )。[211010201]

A.(A)22mm

B.(B)21mm

C.(C)20mm

D.(D)10mm

正确答案是C