Вопрос № 911493 - Английский язык

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Concrete is produced by combining coarse and fine aggregates, Portland cement, and water. Coarse aggregate is generally gravel or crushed stone, and fine aggregate is sand. Cement, sand, gravel, and water are taken in proportional amounts and mixed. The quality of concrete depends mostly on the quality of the cement used. The process of production consists in pouring the mixed components into forms and holding them until they harden. The process of hardening generally lasts about 28 days.

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Concrete is produced by combining coarse and fine aggregates, Portland cement, and water. Coarse aggregate is generally gravel or crushed stone, and fine aggregate is sand. Cement, sand, gravel and water are taken in proportional amounts and mixed. The quality of concrete depends mostly on the quality of the cement used. The process of production consists in pouring the mixed components into forms and holding them there until they harden. The process of hardening generally lasts for about 28 days.

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Painting equipment
First, you need paint brushes. 1_______. Use the broad brush for broad flat areas such as walls. Use the narrow one for corners. 2_______.
Next you need a roller for painting flat surfaces smoothly. Use a long extension on the handle for reaching high places, such as ceilings. 3_______.
Next, you need a paint pot for holding the paint and the brush. Make sure that the mouth of the pot is wide enough for the widest brush, and that is small enough to carry.
Next, you need a stepladder for climbing up to the job, a scraper for scraping off old paint and paper from the walls, cloth for covering the furniture, and rags for cleaning paint off the floor.
4_______.

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Building a road
1_______.
Then the ground is leveled. This is done by cutting the top layer until it is flat and level.
2_______. Finally the top layer is added. 3_______. If it is a blacktop road, layers of hot tarmacadam are poured onto the gravel and pressed down using rollers. The total layer of blacktop materials is approximately 300 mm thick. If it is a concrete road, the concrete is laid on top of the gravel. 4_______.

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1_______. Glass blowing was probably developed in the first century BC in Syria. 2_______.
The Roman Empire used glass more than any other ancient civilisation. 3_______. There were people, however, who regarded it as inferior to materials such as gold and silver. Gallenius, a Roman emperor, used to drink from a glass vessel because he believed that there was nothing less common than glass.
4_______. There was so much demand for Venetian glass in Europe that glassworkers of the island of Murano were forbidden to visit Venice or teach their secrets to outsiders.

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This tank has two pipes and a cover. The tank is made of plastic. The cover is made of wood. The pipe at the top is made of plastic. The pipe at the bottom is made of copper.
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The pipe at the bottom is made of …