A railway marshalling station is the main place for disassembling and assembling a large number of trains, most of which are direct trains and through trains, in different transportation directions in railway freight transport networks, having a technical station with relatively perfect ________________. 铁路编组站是这样的主要场所, 进行铁路货运网络中车列解体、装配，多数列车是直达列车和直通列车，开往铁路货运网络中不同的运输方向。这里设有比较完善的__________的技术站。
A、automatic equipment 自动设备
B、hump automation system 驼峰自动化系统
C、shunting equipment 调车设备