Определите функцию for и but и переведите предложения на язык: 1. for the best accuracy the carriage should be as light as possible. 2. every designer should be responsible for the good and long service of his device. 3. the road must be laid out with a view to economy in original cost and maintenance, for generally its lifetime may be limited. 4. everything was ready for the research to begin. 5. the train bound for the south was driven by a powerful locomotive. 6. a transformer is a device for raising or lowering voltage. 7. nowadays there are means for transmitting energy over long distances. 8. for types of cable are provided for use with drilling machines. 9. but in a piece of timber, whether this be used for a table top or a beam, the radial and still more the tangential shrinkage is of the utmost importance. 10. instruments based on this principle have been described, but the method now universally employed in accurate work is an electrical method. 11. nothing but a double row of ball bearings can improve the machine. 12. but the table, though filled up, was to be extended by the addition of other elements unpredicted by mendeleyev.

For=для but=но 1. для лучшей точности каретка должна быть как можно более легкой.2. каждый дизайнер должен нести ответственность за хорошее и длительное обслуживание своего устройства.3. дорога должна быть выстроена с учетом по первоначальной стоимости и обслуживанию, поскольку обычно ее срок службы может быть ограничен.4. все было готово для начала исследования.5. поезд, направлявшийся на юг, был движимым мощным локомотивом.6. трансформатор - это устройство для повышения или понижения напряжения.7. в настоящее время существуют средства для передачи энергии на большие расстояния.8. для типов кабелей предусмотрены для использования с сверлильными станками.9. но в куске древесины, будь то для столешницы или , радиальная и, тем более, тангенциальная усадка имеет первостепенное значение.10. были описаны инструменты, основанные на этом принципе, но метод, который в настоящее время универсально используется в точной работе, является электрическим методом.11. ничего, кроме двойного ряда шарикоподшипников, не может улучшить машину.12. но таблица, хотя и заполнена, должна была быть дополнена добавлением других элементов, непредсказуемых менделеевым.

Ecological problemsэкологические проблемыecology is a scientific branch which studies interactions between organisms and their environment. it also studies the biodiversity of our planet. earth is the only planet in the solar system where there is life. it is home to various kinds of plant and animal species. for centuries people lived in harmony with their environment until industrialization began. it brought human society into conflict with nature, which today has grown to a dramatic scale. every year industrial waste pollutes surrounding atmosphere with millions of tons of dust and harmful substances.the most acute problems include shortage of natural resources, global warming, acid rains, wildlife extinction, water and air pollution.air pollution  is one of the most important and urgent problems. it is mostly caused by transport and factory fumes, which gradually destroy the ozone layer. unfortunately, this can have dire consequences, as the ozone layer is there to protect our planet from sun radiation. most aerosols which are used in daily life create large holes in this layer.water pollution  also leads to numerous problems in natural environment. many ships carry oil by sea. in case, there is a leakage, many fish die or get contaminated. it happens because their habitat gets polluted. people can also suffer if they eat such fish. oil and other waste pollute beaches as well, which makes it difficult for holiday-makers to swim.acid rains  lead to deforestation. many forests disappear because of acid rains. it is especially true for tropical forests. such rains kill nature in many ways: animals die out, climate changes along with ecosystem.wildlife extinction  is no less acute. many species of animals are in danger nowadays. for example, the blue whale, which is the largest water animal in the world, has been hunted for so long that it became a rare animal. the largest land animal is the african elephant, and it is also exposed to extinction. even though they are strictly protected, these animals are still hunted for their valuable tusks. the only solution of this problem is wildlife conservation. it means opening more national parks, planting more new forests, and cutting down on industrial pollution.global warming  has recently become a real threat. it is the rise in the average temperature of earth’s atmosphere and oceans, which brings tangible changes into world’s climate. it is primarily a problem of too much carbon dioxide in the atmosphere. when we burn fossil fuels, such as coal or oil, carbon overloads and creates greenhouse effect.shortage of natural resources  will definitely affect the future of our environment. it includes food and water shortage, fuel and non-fuel minerals shortage. these resources are not limitless and if people persist using them uncontrollably, the upcoming years will become extremely polluted, economically unstable and risky.