问题
单项选择题
进站、接车进路信号机处，钢轨绝缘可设在信号机前方（）m或后方（）m的范围内。
A.0.5m.0.5m
B.1m.1m
C.1.5m.1.5m
D.2m.2m
答案
参考答案：B
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进站、接车进路信号机处，钢轨绝缘可设在信号机前方（）m或后方（）m的范围内。
A.0.5m.0.5m
B.1m.1m
C.1.5m.1.5m
D.2m.2m
参考答案：B
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