Translate the following word combinations:
1. the way of separating oil; a method of exploring a territory; the problem of refining crude oil;
the process of converting oil into useful products.
2. to be interested in obtaining new data; to prevent from mixing with smth; to result in solving the
problem; to succeed in studying a new process; it’s no use asking this question; it’s worth
trying to survey the area.
3. on heating the mixture; after heating the mixture; before heating the mixture; by (through) heating
the mixture; for heating the mixture; without heating the mixture; apart from polluting; in addition
to increasing; because of reducing; instead of drying; in spite of forecasting.