.Перепишите следующие предложения и переведите их на русский язык, обращая внимание на способы перевода инфинитива. Подчеркните инфинитив в английских предложениях.
1. To reduce current losses in electric wires voltage is increased and current is proportionally decreased.
2. The conductors to be used for transmitting the electric power to the trains are either the third rail or the overhead wire.
3. To convert a railway to electric haulage a costly reconstruction work is necessary.