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【多选题】
水底电缆线路的巡查规定是（）。
A.
如电缆直接敷设于河床上，可每年检查一次水底线路情况
B.
在潜水条件允许下，应派遣潜水员检查电缆情况
C.
检查河岸两端的警告牌是否完好
D.
临近河岸两侧电缆常被潮水冲刷区域每半年巡查一次
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【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