This place is so crowded What shall we do about it？
A. I suggest we should evacuate the theatre as quickly as possible to avoid a trample
B. I advise you not to enter the theatre in order to avoid a trample
C. I’d like to give a tip that you may leave here quickly to avoid a trample
D. I made a suggestion that we cancel the performance immediately to avoid a trample
查看答案
50kg/m及以下钢轨，辙叉心宽40mm断面处，辙叉心垂直磨耗其他站线超过()时达到轻伤标准。
Can we use this material for the decoration of the exhibition hall？
A. Yes. Any available material will do for this job
B. Yes. Water-proof material for the decoration of the hall will be used for the interior decoration
C. No. Fire-proof materials should be used for the interior decoration
D. No. Only highly-cost materials should be used for the interior decoration
50kg/m及以下钢轨,辙叉心垂直裂纹长度(含轨面部分裂纹长度),两条裂纹相加超过()时，应及时更换及焊修。
正线曲线半径为650m，缓和曲线的正矢与计算正矢差允许为()。
微信支付 
支付宝支付