![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
[多选题]
车场线碎石道床道岔综合维修轨距允许偏差值范围内()
A.+2mm
B.-1mm
C.+3mm
D.-2mm
E.-
![](https://static.youtibao.com/asksite/comm/h5/images/m_q_a.png)
CD
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.+2mm
B.-1mm
C.+3mm
D.-2mm
E.-
CD
A.经常保养
B.临时补修
C.周期检修
D.综合维修
A.限速
B.临时补修
C.经常保养
D.作业验收
A.直接埋入地下的油罐每两年挖开3~5处进行检查,发现防腐失效和渗漏者
B.处进行检查,发现防腐失效和渗漏者圈板凹陷、起鼓、折皱的允许偏差值超过规定
C.底板余厚为3mm
D.油罐与附件连接处垫片损坏