单项选择题

With the development of subway vehicle remanufacturing technology, there are many types of urban rail transit vehicles, which can be roughly divided into _______________ and light rail vehicles, while the latter can be divided into single-track vehicles, light rail vehicles and linear motor vehicles. 随着地铁车辆再制造技术的发展,城市轨道交通车辆的种类很多,大致可以分为_______________和轻轨车辆,而轻轨车辆又可以分为单轨车辆、轻轨车辆和直线机动车辆。
A、open car 敞车
B、subway vehicles地铁车辆
C、container cars 集装箱车

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