蜜臀av无码一区二区三区_天天爽天天爽夜夜爽国产自己精品 _色偷偷亚洲偷自拍_亚洲精品无码久久久久Av老牛

Railway multi-tasking comprehensive training system integrates car, machine, engineering, electricity, vehicle and other professions in one. The system combines railway site CTC dispatching, station, train, power supply, passenger transportation, trackside equipment and line scenes, etc., to build a comprehensive operation simulation platform based on train operation planning as the core, train operation organization as the goal, and each work type both independent and joint training, realistically restoring the operation characteristics of the railway site "big joint machine", and efficiently realizing the training and assessment of different work types at different levels of collaborative ability enhancement.