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1. ? is the transferring of passengers and goods by means of wheeled vehicles specially designed to run along railways or railroads.2. ? is the movement of people and goods from one location to another. 3. the vehicles travelling on the rails, collectively known as ? . 4. is a powered vehicles used to haul a train of unpowered vehicles. 5. ? maintain a constant distance between the two rails. 6. the transport of a person or cargo may involve one mode or several. 7. ? provide smooth and hard surfaces on which the wheels of the train can roll with a minimum of friction.
transportation
modes
rails
rail transport
locomotive
rolling stock
sleepers

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1. ? is the transferring of passengers and goods by means of wheeled vehicles specially designed to...

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