A、A.道床
B、B.轨枕
C、C.轨联线
D、D.钢轨连接零件
答案：ABD
A、A.道床
B、B.轨枕
C、C.轨联线
D、D.钢轨连接零件
答案：ABD
A. A.50%
B. B.70%
C. C.96.67%
D. D.100%
A. A.10秒
B. B.20秒
C. C.30秒
D. D.40秒
A. A.Your attention please! Please add-value at the Custermer Sercice Center as the Value Machines are not working. We apologize for any inconvenience this might cause.
B. B.Your attention please! Please buy ticket at the Custermer Sercice Center as the ticket machines are not working. We apologize for any inconvenience this might cause.
C. C.Your attention please! Please follow staff directions to enter as the entry gates are not working. We apologize for any inconvenience this might cause.
D. D.Your attention please! Station lighting is under emergency repair but trains are still running. Please contact staff if you need any assistance. We apologize for any inconvenience this might cause.
A. A.语音通信
B. B.手机信号
C. C.图像视频
D. D.数据信息
A. A.售票机可靠度应大于或等于98%
B. B.进出站闸机可靠度应大于或等于99%
C. C.自动扶梯可靠度应大于或等于98%
D. D.车站乘客信息系统可靠度应大于或等于98%
A. A.车站客运服务人员
B. B.保洁人员
C. C.安检人员
D. D.志愿者
A. A.节假日大客流
B. B.通勤大客流
C. C.春运或暑期大客流
D. D.大型活动大客流
