I. Copy the underlined words and word-combinations, translate them into Ukrainian and learn them.
II. Answer the following questions. 1. What do ferrous metals include? 2. What are non-ferrous metals? 3. What are the properties of metals? 4. What must an engineer consider when he designs a steelwork? 5. What is the oldest and best known light metal? Test yourself: Choose the right variant. 1. Engineers should know… a) the best and most economical materials to use. b) the properties of materials and how they can be worked. c) the best and most economical materials to use and the properties of materials and how they can be worked. d) only the properties of materials. 2. Metals are materials most widely used in industry because of… a) their properties. b) their quantity. c) their quality. d) their hardness. 3. The properties of the metals depend on… a) the size and shape of grains only. b) the orientation of grains only. c) the composition of grains only. d) the size, shape, orientation, and composition of grains. 4. Metals are subject to… a) metal fatigue. b) metal fatigue and to creep. c) metal creep. d) neither of proposed variants. 5. Metals can be worked using… a) lathe, milling machine, shaper and grinder etc. b) machine-tools. c) hammers. d) chisel. Change the words in brackets from Ukrainian into English.
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