前后排障器在轨道上方均安装有橡胶板,橡胶板下缘距轨面应为(),由于经常与钢轨上杂物接触,橡胶板磨损较快,应根据情况及时更换。

A、25mm

B、50mm

C、30mm

D、150mm

相关专题: 橡胶板  

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