Экзаменационный билет №5

Одобрено: ЦМК общеобразовательных дисциплин Протокол № ___________ «____» __________ 2017 г.

Утверждаю: Зам. Директора по УР ГПОУ СПТ ______________Н.Л. Водоватова «____» ___________ 2017 г.

По дисциплине «Иностранный язык»

Для группы Т-13

1. Read and translate the text (прочтите и переведите текст)

ACID

An acid is a molecule or ion capable of donating a hydron (proton or hydrogen ion H+), or, alternatively, capable of forming a covalent bond with an electron pair (a Lewis acid).

The first category of acids is the proton donors. In the special case of aqueous solutions, proton donors form the hydronium ion H3O+ and are known as Arrhenius acids.

Acids form aqueous solutions with a sour taste, can turn blue litmus red, and react with bases and certain metals (like calcium) to form salts. An aqueous solution of an acid has a pH less than 7 and is colloquially also referred to as 'acid' (as in 'dissolved in acid'), while the strict definition refers only to the solute. Chemicals or substances having the property of an acid are said to be acidic.

Common aqueous acids include hydrochloric acid (a solution of hydrogen chloride which is found in gastric acid in the stomach and activates digestive enzymes), acetic acid (vinegar is a dilute aqueous solution of this liquid), sulfuric acid (used in car batteries), and citric acid (found in citrus fruits). So acids can be solutions or pure substances, and can be derived from acids that are solids, liquids, or gases.

The second category of acids is Lewis acids, which form a covalent bond with an electron pair.

2. Translate words and combination of words into English (переведите слова и словосочетания на английский язык): определение, раствор, могут быть поделены, твердое вещество, жидкость, аммиак, формировать водный раствор, менять цвет лакмуса с синего на красный.

3. Answer the following questions (ответьте на следующие вопросы): 1.What chemicals or substances are said to be acidic. 2. What is the first category of acids? 3. What does common aqueous acid include?

Подпись экзаменатора___________________________«15» апреля 2017 г.

Составил преподаватель: М.А. Волощенко

ГПОУ «Сибирский политехнический техникум»

Экзаменационный билет №6

Одобрено: ЦМК общеобразовательных дисциплин Протокол № ___________ «____» __________ 2017 г.

Утверждаю: Зам. Директора по УР ГПОУ СПТ ______________Н.Л. Водоватова «____» ___________ 2017 г.

По дисциплине «Иностранный язык»

Для группы Т-13

1. Read and translate the text (прочтите и переведите текст)

CHEMICAL PROCESSES

When we follow the sequence of events in the chemical plant we can see solid raw materials go from the stock pile to crushers, grinders and screens and then by conveyers to the reaction vessels. For liquid raw materials, the storage tank is the starting point, after which pumps, and perhaps proportioning devices, are required. The same is true of gases which must be propelled by means of fans, blowers, and compressors; frequently they are to be cooled in coolers and washed. The devices used for the cleaning of a gas include mainly dust collectors, dry cyclones, filters and scrubbers.

Materials must be mixed, liquids as well as solids. This process is performed in various types of mixers and agitators. At the other stages, solids are to be separated from liquids in filters, centrifuges, or simply by setting the suspended solid in a settling tank or in continuous mechanical setting units generally known as thickeners or clarifiers. Solutions of solids are evaporated in evaporators; they crystallize in crystallizers, and they are dried in driers. Mixtures of liquids, on the other hand, are usually separated in distillation equipment.

Auxiliary equipment, such as vacuum pumps, heat exchangers, and reaction vessels, especially kettles, are required in many of these operations, as well as numerous types of instruments for measurement and control.

2. Answer the following questions (ответьте на следующие вопросы): 1.What methods are used to separate solids from liquids? 2. In what machinery are materials mixed? 3. What purposes do crushers, grinders and screens serve in the chemical industry?

3. Translate into Russian paying attention to the word by (переведите на русский язык, обращая внимание на слова): 1. Many substances are prepared by chemical-methods. 2. New experimental methods are employed by chemists. 3. The mechanical energy of a waterfall can be transformed into electrical energy by means of a water wheel.

Подпись экзаменатора___________________________«15» апреля 2017 г.

Составил преподаватель: М.А. Волощенко

ГПОУ «Сибирский политехнический техникум»