答案:A
答案:A
A. 调车作业
B. 列车试验
C. 应急救援
D. 设备检修
A. 日常备用金
B. 抢险备用金
C. 应急备用金
D. 客伤备用金
A. 最先进的技术
B. 最流行的技术
C. 最符合运营需要的技术
D. 最节能的技术
A. This is your card. Swipe it and then you can come out.
B. Hold the card in your right hand and swipe it here.
C. Please wait for the train at the opposite platform.
D. You can return the ticket at the Ticket Center.