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【单选题】
需要采取固定上手闸防溜措施的线路中不正确的是（）
A.
料6线
B.
A7线
C.
原料12线
D.
冷5线
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举报参考答案：
举一反三
【简答题】质量为m的木块静止在一固定的斜面上，已知动摩擦因素为μ，斜面倾角为θ，木块所受摩擦力为（ ）
A.
μmgcosθ
B.
μmgsinθ
C.
mgcosθ
D.
mgsinθ
【单选题】在装卸线上手推调车时，推车人员应在车辆两侧地面上推动车辆，禁止站在站台上推车，禁止在轨面高于（）以上的线路上推车。
A.
1m
B.
0.5m
C.
0.3m
D.
0.4m
【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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【简答题】质量为m的木块静止在一固定的斜面上，已知动摩擦因素为μ，斜面倾角为θ，木块所受摩擦力为（ ）
A.
μmgcosθ
B.
μmgsinθ
C.
mgcosθ
D.
mgsinθ
【单选题】在装卸线上手推调车时，推车人员应在车辆两侧地面上推动车辆，禁止站在站台上推车，禁止在轨面高于（）以上的线路上推车。
A.
1m
B.
0.5m
C.
0.3m
D.
0.4m
【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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