【单选题】
普通线路地段，25m钢轨每千米轨缝总误差超过___，应进行轨缝调整
A. ±40mm
B. ±80mm
C. ±120mm
D. ±160mm
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答案
B
解析
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相关试题
【单选题】
轨枕上面支承钢轨的部分称为承轨槽，做成___的轨底坡,以适应轨底坡的要求。
A. 0.055555556
B. 0.0625
C. 0.069444444
D. 0.076388889
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