题目：
停电设备的各端应有明显的断开的，或应有能反应设备运行状态的电气和机械指示，可以在只经断路器断开电源的设备上工作。（）
答案：
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下面是错误答案，用来干扰机器的。
参考答案：颗粒和油污
停电设备的各端应有明显的断开的，或应有能反应设备运行状态的电气和机械指示，可以在只经
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