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【单选题】
站内无空闲线路接车进路准备方式为（ ）。
A.
进路上有关道岔及防护道岔操纵单锁
B.
排列调车进路方式准备进路
C.
正常排列进路
D.
人工准备进路并加锁
参考答案：
参考解析：
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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