Добавил:
Upload Опубликованный материал нарушает ваши авторские права? Сообщите нам.
Вуз: Предмет: Файл:
English(Part1).doc
Скачиваний:
25
Добавлен:
15.11.2019
Размер:
2.95 Mб
Скачать

V. Correct mistakes in the following sentences.

  1. This beaker is made from glass.

  2. This beam made of concrete.

  3. What is the chisel made?

  4. This steel pipes are made of cast iron.

  5. Tyres is usually made of rubber.

  6. The device for measuring temperature is known a thermometer.

  7. The metre ruler is used for measure lengths and widths.

VI. Translate the following sentences into English using your active vocabulary.

  1. Эти инструменты сделаны из различных технических материалов.

  2. Существует 2 типа технических материалов: металлы и неметаллы.

  3. Сталь, медь, литейный чугун широко используются для изготовления болтов, винтов, гаек.

  4. Как металлы, так и неметаллы обладают определенными свойствами, поэтому они широко используются в производстве технических изделий.

  5. Резина – очень прочный материал.

  6. Ручка этого молотка сделана из дерева, а обух – из стали.

  7. – Олег, дай мне, пожалуйста, эту стеклянную колбу.

  8. Будь осторожен, не урони эту вещь. Она сделана из стекла.

  9. – Дмитрий, не используй этот медный провод, используй стальной.

  10. Пластик – очень легкий материал.

Reading and Speaking

I. Try to answer these questions before you read the text.

  1. What groups are all engineering materials divided into?

  2. Where are different metals used?

  3. There are ferrous and non-ferrous metals, aren't there?

  4. Are steel and cast iron ferrous or non-ferrous metals?

  5. What are non-ferrous metals?

  6. What are the characteristics of non-ferrous metals?

II. Read the text attentively and check your answers.

All engineering materials are divided into metals and non-metals. Copper, cast iron, aluminium are examples of metals. Rubber, plastic and ceramics are examples of non-metals. Today different metals are widely used in machine-building industry.

We can divide all metals into ferrous and non-ferrous. Steel and cast iron are in the group of ferrous metals. They are alloys of iron with carbon, manganese, silicon and other components.

Non-ferrous metals are metals and alloys the main component of which is not iron but some other element such as aluminium, copper and others. Some of the characteristics of non-ferrous metals are high electric and heat conductivity, high corrosion resistance, light weight and easiness of fabrication.

III. Find the proper continuation of the sentences according to the information in the text.

  1. All engineering materials are divided into …

  2. Ferrous metals have …

  3. The characteristics of non-ferrous metals are …

  4. One of the main components of non-ferrous metals is …

  5. We use different metals in …

  6. Steel and cast iron are examples of …

  1. aluminium.

  2. metals and non-metals.

  3. machine-building industry.

  4. ferrous metals.

  5. iron with carbon, manganese, silicon and other components.

  6. high electric and heat conductivity, high corrosion resistance, light weight, etc.

IV. Say whether you agree or disagree with these statements.

  1. All engineering materials are divided into metals and non-metals.

  2. Steel, iron and copper are widely used for making tools.

  3. One of the main characteristics of ferrous metals is high corrosion resistance.

  4. Aluminium and copper are the main components of non-ferrous metals.

  5. Plastic is a heavy material.

  6. Rubber is a very tough engineering material.

Соседние файлы в предмете [НЕСОРТИРОВАННОЕ]