6. Укажите, какие предложения соответствуют содержанию текста.

1. Refining and distribution to a market are referred to as the downstream sector.

2. The technologies used for the exploitation of crude oil and natural gas reservoirs.

3. Relational databases and advanced computer graphics are used in petroleum exploration.

4. The largest volume products of the industry are fuel oil and gasoline (petrol).

5. The technical control of production is also part of modern engineering.

6. Petroleum engineering has historically been one of the highest paid engineering discipline.