试题与答案

《铁路线路修理规则》规定,在200km/h>线路允许速度Vmax>160km/h正线

题型:填空题

题目:

《铁路线路修理规则》规定,在200km/h>线路允许速度Vmax>160km/h正线上,轨道动态质量容许偏差管理值中,车体垂向加速度Ⅱ级容许级偏差为()。

答案:

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参考答案:C

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( )19. A. opens      
( )20. A. look down on 
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D. or else            
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D. attempts           
D. happens          
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