Английский язык Задача №3246854
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- If the quality of the equipment were higher, the results of the experiment would be more accurate and complete.
- Many building materials wouldn't have been saved if reinforced concrete hadn't been widely used in construction.
- It is impossible to make cement without limestone and clay.
- If we used the right water-cement ratio, we would obtain concrete of high strength and durability.
- It is essential that the dampness be eliminated from buildings.