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Ручная дрель имеет цепной механизм. *
да
Нет
2. В реечном механизме при вращении зубчатого колеса рейка перемещается поступательно. *
да
нет
3. В механизме ведомое звено передает движение ведущему звену. *
да
нет
4. Шпонка применяется для надежного закрепления шестерни на валу. *
да
Нет
5. К черным металлам относят железо и сплавы на его основе – алюминий и бронзу. *
да
Нет
6. Ковкость стали хуже, чем у меди. *
да
Нет
7. Цветные металлы и сплавы меньше подвержены коррозии, чем черные металлы и сплавы. *
да
Нет
8. Чугун отличается низкой хрупкостью по сравнению со сталью. *
да
Нет
9. Болты изготавливают из профиля сортового проката, имеющего форму шестигранника. *
да
Нет
10. Нониус - это деталь штангенциркуля, которой измеряют глубину пазов и отверстий. *
да
Нет
11. При измерении штангенциркулем десятые доли миллиметра определяют по шкале нониуса до нулевого штриха. *
да
Нет
12. Точность измерения штангенциркулем в 100 раз превышает точность измерения линейкой. *
да
Нет
13. При установке ножовочного полотна зубья должны быть направлены в сторону, противоположную ручке. *
да
Нет
14. При холостом ходе нужно перемещать ножовку с легким нажимом. *
да
нет
15. Кистевой удар применяют для разделения заготовки на части. *
да
Нет
16. При рубке в тисках заготовку закрепляют таким образом, чтобы разметочная риска находилась ниже уровня губок на 1,5…2 мм. *
да
нет
17. При рубке металла толщиной 5 мм его прорубают с одной стороны, примерно на половину толщины, а затем переворачивают и разрубают окончательно. *
да
нет
18. Личные напильники применяют для грубой обработки. *
да
нет
19. Продольное опиливание обеспечивает прямолинейность обрабатываемой плоскости. *
да
Нет
20. Напильники с рашпильной насечкой применяют для опиливания деталей из пластмассы. *
да
Нет

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Alya23051
Alya23051
4,8(81 оценок)

high above the city, on a tall column, stood the statue of the happy prince. he was gilded all over with thin leaves of fine gold, for eyes he had two bright sapphires, and a large red ruby glowed on his sword-hilt.

he was very much admired indeed. “he is as beautiful as a weathercock,” remarked one of the town councillors who wished to gain a reputation for having artistic tastes; “only not quite so useful,” he added, fearing lest people should think him unpractical, which he really was not.

“why can’t you be like the happy prince? ” asked a sensible mother of her little boy who was crying for the moon. “the happy prince never dreams of crying for anything.”

“i am glad there is some one in the world who is quite happy,” muttered a disappointed man as he gazed at the wonderful statue.

“he looks just like an angel,” said the charity children as they came out of the cathedral in their bright scarlet cloaks and their clean white pinafores.

“how do you know? ” said the mathematical master, “you have never seen one.”

“ah! but we have, in our dreams,” answered the children; and the mathematical master frowned and looked very severe, for he did not approve of children dreaming.

one night there flew over the city a little swallow. his friends had gone away to egypt six weeks before, but he had stayed behind, for he was in love with the most beautiful reed. he had met her early in the spring as he was flying down the river after a big yellow moth, and had been so attracted by her slender waist that he had stopped to talk to her.

“shall i love you? ” said the swallow, who liked to come to the point at once, and the reed made him a low bow. so he flew round and round her, touching the water with his wings, and making silver ripples. this was his courtship, and it lasted all through the summer.

“it is a ridiculous attachment,” twittered the other swallows; “she has no money, and far too many relations”; and indeed the river was quite full of reeds. then, when the autumn came they all flew away.

after they had gone he felt lonely, and began to tire of his lady-love. “she has no conversation,” he said, “and i am afraid that she is a coquette, for she is always flirting with the wind.” and certainly, whenever the wind blew, the reed made the most graceful curtseys. “i admit that she is domestic,” he continued, “but i love travelling, and my wife, consequently, should love travelling also.”

“will you come away with me? ” he said finally to her; but the reed shook her head, she was so attached to her home.

“you have been trifling with me,” he cried. “i am off to the pyramids. good-bye! ” and he flew away.

all day long he flew, and at night-time he arrived at the city. “where shall i put up? ” he said; “i hope the town has made preparations.”

then he saw the statue on the tall column.

“i will put up there,” he cried; “it is a fine position, with plenty of fresh air.” so he alighted just between the feet of the happy prince

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