货物列车运行中,自阀减压排风未止,不得缓解机车制动;自阀减压后至缓解、停车前,机车制动缸压力不得少于（ )。A．50kPa ...

作者: tihaiku 人气: - 评论: 0

问题货物列车运行中,自阀减压排风未止,不得缓解机车制动;自阀减压后至缓解、停车前,机车制动缸压力不得少于（ )。

选项 A．50kPa B．60kPa C．70kPa

答案 A

解析 P115T486

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