![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
[单选题]
-D-E-002 3 2 3线路允许速度160km/h≥Vmax>120km/h,轨端或轨顶面剥落掉块,长度超过()mm且深度超过3mm时为重伤钢轨
A.10
B.15
C.25
D.30
![](https://static.youtibao.com/asksite/comm/h5/images/m_q_a.png)
C、25
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.10
B.15
C.25
D.30
C、25
A.30mm
B.50mm
C.80mm
D.100mm
A.5
B.7
C.8
D.3
A.4
B.6
C.8
D.3
A.1/(10Vmax)
B.1/(9Vmax)
C.1/(8Vmax)
D.1/(7Vmax)
A.+6,-2
B.+6,-4
C.+5,-2
D.+5,-3