4. Определите тип придаточного предложения. a) 1. That it is possible to convert heat to energy and energy back to heat can be demonstrated in a number of ways. 2. When we shall start a new series of experiments is not yet settled. 3. Whether the spaceship will be able to leave the earth depends upon the speed of the ship.

Б) 1. One of the main characteristics of plastics is that their molecules are composed of a large number of re peating molecules known as monomers. 2. The most important feature of this plant is that all its shops are equipped with automatic and semi-automatic machine tools. 3. The difficulty is whether all the processes of the production at the plant can be mechanized.

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