Translate into russian. determine the tense of the verb: 1. before world war t only a few automobiles were produced in russia. 2. a successful research has been made in materials for machine parts that operate at high temperatures and under high tensile forces. 3. the heater is located in the trunk, it works on petrol. 4. another experiment is being conducted over a crowded area of central glasgow which includes 80 traffic signals. 5. air is mixed with the vapour of the petrol in the carburetor. 6. car a was driven by a driver avoiding any risk, and car в as fast as legally possible. 7. the valves are the openings in the cylinder wall that are uncovered by the piston at the end of its outward travel. 8. machine-tools usually work materials mechanically but other machining methods have been developed lately.

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