69.更换室外点灯变压器,应试验相关信号机哪些项目?
["69\uff0e1.\u706f\u4f4d\u53ca\u663e\u793a\u6838\u5bf9\uff1a2\u4e3b\u526f\u4e1d\uff08\u706f\u6ce1\uff09\u8f6c\u6362\uff1a3\u65ad\u4e1d\u8868\u793a\uff1a4\uff0e\u8fdb\u8def\u8868\u793a\u5668\u6838\u5bf9\u3002"]
69.更换室外点灯变压器,应试验相关信号机哪些项目?
["69\uff0e1.\u706f\u4f4d\u53ca\u663e\u793a\u6838\u5bf9\uff1a2\u4e3b\u526f\u4e1d\uff08\u706f\u6ce1\uff09\u8f6c\u6362\uff1a3\u65ad\u4e1d\u8868\u793a\uff1a4\uff0e\u8fdb\u8def\u8868\u793a\u5668\u6838\u5bf9\u3002"]