铁路机车车辆 - 2026 进行中

科目: 铁路机车车辆
级别: II
类别: 大学生
测试题目: 英语
问题示例: What is the primary purpose of a wheel flange on a railway wheel? To increase the vehicle's payload, To cool the wheel during braking, To guide the wheelset along the rail, To connect the wheelset to the brake pipe