1. Hick was very tired. He has been playing football for hours.
2. Tom gasped in horror when he saw the ghostly figure.
3. Sam was very happy because he won the competition.
4. It was the first time that Elizabet has ever seen picture of Bigfoot.
5. Liza and Peter were very excited because they visited a haunted castle.
6. Sandra had been painting for three years before she sold her first painting.
7. I was calling you all day yesterday, but you weren't home.
I was studying in the library with some kids from my class.
8. The research tea found an unusual fossil and took it back to the lab to examine it.
9. As I looked out of the window, I saw a car crash into a tree.
10. Did the girl help you with the homework yesterday?
11. Did you know that our dads went to the same school when they were young?
12. What was Patrick doing when Sam told him the truth?
He started shouting at him!
13. While Lisa was reading a book, her brother was listening to music.
14. Shane was starting at the woman for quite some time before he realized who she was.
15. Liza was very upset because she had a horrible nightmare.
16. She was angry because he hasn't been calling her since last weekend.
17. I didn't go out last night because I hadn't finished my work.
18. You were sleeping when the earthquake started.
19. She didn't go shopping because she had spent the morning with her brother that day.
20. Tom had been waiting for Jessica for an hour before she left, so he was upset.
Наибольшее количество автомобилей используют 4-х тактные поршневые двигатели. Четырехтактный поршневой двигатель требует четыре хода поршня на один цикл. При первом ходе поршня вниз происходит всасывание рабочей смеси (ход впуска). При первом ходе поршня вверх происходит её (рабочей смеси) сжатие (ход сжатия). При втором ходе поршня вниз – рабочий ход с большим подъёмом давления в цилиндре и выделением тепла при сгорании топлива, а при втором ходе поршня вверх - ходе выпуска – происходит выталкивание поршнем отработанных газов. Впускные и выпускные клапаны в цилиндре управляют поступление воздушно топливной смеси и выпуск отработанных газов. В конце рабочего хода, давление газов в цилиндре 2.8 до 3.5 кг/ cm2 . Эти газы выходят при открытии выпускного клапана. Они выталкиваются к глушителю - участку трубопровода увеличенной площади сечения, содержащему расширяющиеся каналы и перфорированные пластины, через которые расширяются газы и выпускаются в атмосферу.
Большую плавность работы четырехтактного двигателя обеспечила разработка четырехцилиндрового двигателя, который обеспечивает передачу энергии от того или иного из цилиндров на каждом такте цикла. Дальнейшее увеличение мощности и плавности достигается при применении 6-ти, 8-ми, 12-ти и 16-ти цилиндровых двигателей с рядным или V-образным расположением цилиндров.
1. Plant managers are in the best position to set safety standards at each plant.
2. To be a good manager you need loads of energy.
3. An accountant provides assurance of fiscal probity to businesses.
4. Real estate managers are in the best position of anyone to accurately estimate a
property’s value.
5. Personnel managers say that Europe has a shortage of good senior executives who are willing to move.
<span>I always/never wake up late. Usually I clean my room twice a week. Usually I go shopping on weekends with my mom. I read a book sometimes. I wash the dishes sometimes. I always walk to school.</span>