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【多选题】
照明线路断路时，应（）
A.
使用电缆故障测试仪查找断路点
B.
沿电缆敷设路径查找异常点
C.
如线路较长，可将电缆分段查找异常点
D.
重新分段或整条敷设电缆予以替换
E.
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【单选题】Subways are underground trains, which usually operate 24 hours a day. They are found in larger cities and usually run between the suburbs and the downtown area. Maps and schedules are available from t...
A.
within downtown areas
B.
away from city centers
C.
in or outside big modern cities
D.
between suburbs and city centers
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【单选题】Subways are underground trains, which usually operate 24 hours a day. They are found in larger cities and usually run between the suburbs and the downtown area. Maps and schedules are available from t...
A.
within downtown areas
B.
away from city centers
C.
in or outside big modern cities
D.
between suburbs and city centers
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