Заполняя пропуски необходимыми предлогами. mr. hall delivers lectures the students technical . there are several measuring motor lubricants and other technical liquids. a wide range forms energy can be electricity with little losses. the engine is water from the radiator or a special fan hood. thery are several important metals and alloys that can be used for machine elements. the bearings are or tank or a sump, which is located engine.

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