东风8B型内燃机车：JZ-7型空气制动机，自阀在紧急制动位（）压力达450千帕，作用阀由自动呈保压位。A.制动缸 B.总风缸 C.降压风缸 D.均衡风缸

作者: tihaiku 人气: - 评论: 0

问题东风8B型内燃机车：JZ-7型空气制动机，自阀在紧急制动位（）压力达450千帕，作用阀由自动呈保压位。

选项 A.制动缸 B.总风缸 C.降压风缸 D.均衡风缸

答案 A

解析第四章第二节第690题

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