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.