6. Задайте разделительные вопросы к следующим предложениям. 1. Air-conditioning system in

6. Задайте разделительные вопросы к последующим предложениям. 1. Air-conditioning system in a railway car ensures a constant supply of fresh air in hot weather and heating the entire saloon in cold weather. 2. The Trans-Siberian Railway is divided into six railways in Ural, Siberia and the Far East. 3. George Pullman became well known for luxury sleeping cars called Pullman cars in his honor. 4. These express trains will proceed to the final destination without any stops. 5. Both direct and alternating current can be used on electrified railways. 6. Powerful track-laying machines have been developed for the building of railroads.