- •Vocabulary
- •1. Give English equivalents.
- •2. Ask questions according to the models.
- •3. Supply prepositions.
- •4. Complete the sentences. Choose the right word from the list. There are more words than necessary!
- •5. Answer the questions.
- •6. Translate into English.
- •7. Write a dictation.
- •Vocabulary
- •1. Choose the proper verb form.
- •2. Answer the questions.
- •Vocabulary
- •1. Give English equivalents:
- •2. Complete the sentences:
- •3. Give English equivalents to the words in brackets:
- •4. Self-assessment questions:
- •5. Translate into English:
- •1. Translate the word combinations into Russian and use them in your own sentences.
- •2. Choose the proper verb form, active or passive.
- •Vocabulary
- •1. Translate into English.
- •2. Supply the proper preposition.
- •Vocabulary
- •Give English equivalents:
- •Answer the questions according to the models:
- •Match the type of the boiler with its principle of classification:
- •Self-assessment questions:
- •5. Translate into English:
- •Vocabulary
- •1. Give answers to the questions:
- •2. Translate into English:
- •Vocabulary
- •1. Give English equivalents:
- •2. Ask questions according to the model:
- •3. Complete the sentences:
- •4. Answer the questions:
- •5. Translate into English.
- •Vocabulary
- •1. Give English equivalents:
- •2. Change these sentences using the modal verbs may, can, must:
- •3. Change these sentences into the passive:
- •4. Supply prepositions:
- •5. Answer the questions:
- •6. Translate into English:
- •Vocabulary
- •1. Give English equivalents:
- •2. Supply prepositions:
- •3. Self-assessment questions:
- •4. Translate the words into Russian.
- •5. Choose the proper verb and put it into the correct form. There are more verbs than necessary.
- •6. Translate into English:
- •Unit VI. The superheater
- •Vocabulary
- •1. Give English equivalents:
- •3. Answer the questions:
- •Unit VII. The economizer
- •Vocabulary
- •1. Give English equivalents:
- •2. Ask questions according to the model in the singular or in the plural:
- •3. Insert prepositions and conjunctions:
- •4. Answer the questions:
- •5. Translate the phrases containing comparatives and superlatives:
- •6. Translate into English:
- •How to operate a boiler? Boiler Starting Procedure - Checks and Techniques
Vocabulary
feed water питательная вода
evaporate, v испаряться
impurity, n примесь; загрязнение
remain, v оставаться
salt deposits отложения солей
scale накипь
foaming вспенивание
priming вскипание
soft sludge мягкий шлак; шлам
brittle scale хрупкая, ломкая накипь
harmful, adj вредный
blowing down нижнее продувание
alkali, n щелочь
organic matter органическое вещество
solution, n раствор
excess alkalinity избыточная щелочность
injurious, adj вредный
adhere, v прилипать; приставать
rupture, n разрыв
rating, n мощность
load, n нагрузка
blow off верхнее продувание
fresh water свежая; пресная вода
dissolve, v растворять
contaminant, n загрязняющее вещество; примесь
deaerator, n деаэратор
acid, n кислота
sodium chloride хлорид натрия
E X E R C I S E S
1. Give English equivalents:
Питательная вода; подавать; питательный насос; содержать примеси; приводить к проблемам; коррозия; образовывать; кальций; магний; сульфат магния; мягкая масса; предотвращать образование накипи; наличие; вызывать перегрев; мера; избегать; чрезмерные нагрузки; углекислый газ; карбонат натрия, проводить химический анализ.
2. Change these sentences using the modal verbs may, can, must:
Model. Priming is due to high ratings. Priming may be due to high ratings. |
Foaming is due to the presence of dirty water in the boiler.
Oil in the feed water is very injurious to the boiler.
Priming is also due to a poorly designed steam drum.
Acids are neutralized by the addition of sodium carbonate.
A little of the chemicals is added at a time.
3. Change these sentences into the passive:
Model. Chemicals remove scale from the boiler. Scale from the boiler is removed by chemicals. |
The addition of alkalis prevents scale formation.
The presence of oils in solution causes foaming.
Some of the salts produce a soft sludge.
The chlorides of sodium and magnesium and the sulphate of iron cause corrosion.
We may neutralize acids by the addition of sodium carbonate.