通信线路撑铁长度眼对眼的距离为()mm。
A.900
B.911
C.912
D.922
参考答案:D
---May I look at your map for a little while?
---Of course, ________, Jack.
A.don’t worry
B.I don’t mind
C.enjoy yourself
D.take your time
CRH2A型动车组转向架辅助排障器高度为()。