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【单选题】
汛期，至少线路工区应有4人、桥梁工区应有1人留宿值守，同时须（）巡查人数。
A.
1/3
B.
1/2
C.
满足冒雨巡回图规定
D.
全员
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