题目内容
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钢轨类型为60kg/m,轨底宽度为()。A.176mmB.150mmC.152mmD.132mm
钢轨类型为60kg/m,轨底宽度为()。
A.176mm
B.150mm
C.152mm
D.132mm
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钢轨类型为60kg/m,轨底宽度为()。
A.176mm
B.150mm
C.152mm
D.132mm
A.220.1mm
B.200mm
C.150mm
D.250mm