【单选题】
门式滚轮堆取料机的斗轮安置在___上。
A. 门架；
B. 活动梁；
C. 尾车；
D. 固定梁。
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答案
B
解析
暂无解析
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翻车机的重车铁牛按照ISO 国际标准规定，设备必须在控制状态下运行，克服铁牛牵引采用“___”的操作方式，因此可逐渐采用调车机将铁牛系统改进完善。
A. 溜放；
B. 不规则；
C. 撞车；
D. 繁重。
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