БРАТЬЯ И СЁСТРЫ
ответить на во Вот текст: Drawing consists of pulling metal through a die. One type is wire drawing. The diameter reduction that can be achieved in one die is limited, but several dies in series can be used to get the desired reduction. Sheet metal forming Sheet metal forming is widely used when parts of certain shape and size are needed. It includes forging, bending and shearing. One characteristic of sheet metal forming is that the thickness of the sheet changes little in processing. The metal is stretched just beyond its yield point (2 to 4 percent strain) in order to retain the new shape. Bending can be done by pressing between two dies. Shearing is a cutting operation similar to that used for cloth. Each of these processes may be used alone, but often all three are used on one part. For example, to make the roof of an automobile from a flat sheet, the edges are gripped and the piece pulled in tension over a lower die. Next an upper die is pressed over the top, finishing the forming operation, and finally the edges are sheared off to give the final dimensions. Forging Forging is the shaping of a piece of metal by pushing with open or closed dies. It is usually done hot in order to reduce the required force and increase the metal's plasticity. Open-die forging is usually done by hammering a part between two flat faces. It is used to make parts that are too big to be formed in a closed die or in cases where only a few parts are to be made. The earliest forging machines lifted a large hammer that was then dropped on the workpiece, but now air or steam hammers are used, since they allow greater control over the force and the rate of forming. The part is shaped by moving or turning it between blows. Closed-die forging is the shaping of hot metal within the walls of two dies that come together to enclose the workpiece on all sides. The process starts with a rod or bar cut to the length needed to fill the die. Since large, complex shapes and large strains are involved, several dies may be used to go from the initial bar to the final shape. With closed dies, parts can be made to close tolerances so that little finish machining is required. Two closed-die forging operations are given special names. They are upsetting and coining. Coining takes its name from the final stage of forming metal coins, where the desired imprint is formed on a metal disk that is pressed in a closed die. Coining involves small strains and is done cold. Upsetting involves a flow of the metal back upon itself. An example of this process is the pushing of a short length of a rod through a hole, clamping the rod, and then hitting the exposed length with a die to form the head of a nail or bolt.

1)yesterday my friend and his class went to the zoo .At those morning he fed his dog and went to the point where he should met his class .Before his journey he has read a book about different kinds of fishes . When we came to the zoo there was an aquarium where was different spices of fishes .at the next cage there was a wild cat, later zookeeper showed us how to take care of it, how to fed and how clean cagesAs he said and think creeping animals at cages it’s a bit intolerant but they a creeping in save

Summer is the most wonderful time for me. I always look forward to summer holidays. Summer is the most beautiful time of the year. The three summer months give us a lot of new impressions.

Summer is the time when I can do everything I like. I like to play football, swim in the river, go to the forest, and travel. This summer I did a lot of sports — I played football in the school stadium almost every day.

During this summer holidays, I walked, bathed and sunbathed much. When it rained, I read books. One of them was Jack London's «White Fang». I really liked the book. It is about a wolf dog, very devoted and fair, capable of great and sincere affection. Many people today lack these qualities. I would like to have such a four-footed friend.

This summer I also went to the sea, visited my grandmother, and spent the rest of the time at home.

In July, I had a trip to the sea with my family. The weather was nice, so we swam and sunbathe. The water was warm and transparent. We also saw the sights of Anapa and took photos. We also went to the zoo, which left a lot of good impressions. At the entrance, we were offered to buy different treats for the zoo pets. I liked to feed birds and animals from my hands. It was funny to observe the monkeys, toucans, raccoons, and ostriches.

In August, I stayed with my grandmother. I liked it because my grandmother allows me absolutely everything. I read books, went rollerblading and cycling. The last summer days I spent preparing for the first of September.

Summer has ended, but I will never forget my summer holidays. My holidays were excellent.

Объяснение:Лето — самое замечательное для меня время. Я всегда с нетерпением жду летних каникул. Лето — самое прекрасное время года. Три летних месяца дают нам много новых впечатлений.

Лето — это время, когда я могу делать все, что мне нравится. Мне нравится играть в футбол, плавать, ходить в лес и путешествовать. Этим летом я много занимался спортом – я играл в футбол на школьном стадионе почти каждый день.

Во время этих летних каникул я гулял, много плавал и загорал. Когда шел дождь, я читал книги. Одной из книг была «Белый клык» Джека Лондона. Мне действительно понравилась эта книга. Речь в книге идет о волчке, очень преданном и справедливом к большой и искренней привязанности. Сегодня многим людям не хватает таких качеств. Я хотел бы иметь такого друга.

Этим летом я также был на море, навестил бабушку и провел остаток времени дома.

В июле мы семьей ездили на море. Погода была хорошая, поэтому мы плавали и загорали. Вода была теплой и прозрачной. Мы также увидели достопримечательности Анапы и сделали много фотоснимков. Мы также ходили в зоопарк, где я получил массу хороших впечатлений. На входе нам предложили купить различные угощения для животных зоопарка. Мне понравилось кормить птиц и животных из рук. Было забавно наблюдать за обезьянами, туканами, енотами и страусами.

В августе я гостил у бабушки. Мне понравилось, потому что бабушка позволяет мне абсолютно все. Я читал книги, катался на роликах и ездил на велосипеде. В последние летние дни я готовился к первому сентября.

Лето закончилось, но я никогда не забуду свои летние каникулы. Мои каникулы были отличными.