当前位置：在线题库搜索＞[单选题]轨道电路一般由钢轨、钢轨绝缘、钢轨接续线、引接线、受电设备和()组成的答案是什么？
问题：
[单选题]轨道电路一般由钢轨、钢轨绝缘、钢轨接续线、引接线、受电设备和()组成
A、联锁设备
B、送电设备
C、电路设备
D、信号设备
参考答案：
B
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