【判断题】
晶闸管的触发脉冲应与晶闸管主电路的电源电压同步。
A. 对
B. 错
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答案
A
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【判断题】
车辆在曲线上运行时，由于外轨的超高要使车辆向曲线内侧倾斜，形成内侧空气弹簧加载、外侧空气弹簧减载，同时又由于曲线长度较长，车辆在曲线上运行时间较长，所以经2～4s后高度调整阀产生调整作用。
A. 对
B. 错
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