Проверьте, , я с временами не разбираюсь 1.there was a big need for more effective engine? была большая потребность в более эффективном двигателе? 3. the motorcycle became more reliable? мотоцикл стал более надежным? 4. when cars have been presented in london? когда автомобили были представлены в лондоне ? 5. where the oil pipeline has been put in 1865? где нефтепровод был положен в 1865 году? 6. what transport is widespread in switzerland? какой транспорт распространен в швейцарии?
2.Did the motorcycle become more reliable?
3.When have cars been presented in London?
4.Where has the oil pipeline been put in 1865?
6.What is transport widespread in Switzerland?
А перевод нормальный.