Выберите предложения, которые содержат независимый причастный оборот. 1) hard manual labour having been replaced by machines, railway construction takes less time and money. 47 2) the new diesel-building plant having been reconstructed, we in-creased the output of locomotives. 3) before the beginning of the machine age there were no railways. 4) the railway received fifteen new locomotives, ten of them hav-ing been produced by the kolomna works. 5) the most efficient means of handling goods is container usage.