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[单选题]
宁高线高淳基地车挡-D1信号机之间的线路为牵出线II,全长m()
A.111
B.150
C.180
D.184
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A.111
B.150
C.180
D.184
第6题
A.立式固定车挡、缓冲滑动式车挡、水泥挡、摩擦式车挡
B.摩擦式车挡、缓冲滑动式车挡、立式固定车挡、水泥挡
C.缓冲滑动式车挡、摩擦式车挡、立式固定车挡、水泥挡
D.立式固定车挡、摩擦式车挡、缓冲滑动式车挡、水泥挡
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