800m≤R

分类: 高速铁路有砟无砟轨道抽考题库汇总版2019 发布时间: 2023-12-01 12:13 浏览量: 0

800m≤R

A.25m,30mm,10mm

B.50m,40mm,20mm

C.25m,30mm,20mm

D.50m,30mm,15mm

正确答案是A