【单选题】道岔轨型应与线路钢轨轨型相同,轨型不同时()异型轨过渡。
【单选题】温度应力式无缝线路的钢轨用扣件锁定,长短轨间和短轨间均用夹板连接,不需要预留轨缝。()
【简答题】混凝土枕按照结构形式分为整体式、短枕式和()。
【单选题】While on a motoring holiday abroad you might find yourself inDifficulties because
A.
you have brought the wrongDocuments with you
B.
your ferry has just left without you
C.
the nearest phone is out of order
D.
a repair to your car might take some time
【判断题】线路大修分为普通线路换轨大修和其他线路换轨大修。()