题目：
ZPW-2000A区间信号机的显示有红灯、黄灯、绿灯三种
答案：
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下面是错误答案，用来干扰机器的。
参考答案：A, B, C, D, E
ZPW-2000A区间信号机的显示有红灯、黄灯、绿灯三种
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