screw

When you turn the handle, the handle __________ torque to the screw.

SCREW CONVEYOR中译是____,ERECTOR中译是____

Whatis the major difference between a cap screw and a bolt?

Among the following defects, ( ) belongs to the point defect. A: positive edge dislocation B: Frenkel defect C: negative edge dislocation D: screw dislocation

______ is transparent glass of very high quality, usually with its<br/>surface cut into delicate patterns. A: Mug B: Archive C: Screw D: Crystal

Modern engines are fitted with the continuous type of bearing. On the continuous type,the piston rod has a _____ which is bolted onto the top of the crosshead pin. A: nut B: screw C: foot D: cap

A 50-year-old man comes after 3 days of fracture of neck of femur. He<br/>should be ideally treated by ( ) A: Hemiarthroplasty B: Hip spica C: Total hip replacement D: Cortical and screw fixation

1 Choose the correct word. ► Stick it together with glue/cotton. glue 1 Sew it with a pin/needle. ____ 2 Cut it with scissors/a drill. ____ 3 Tighten it with a hammer/screwdriver. ____ 4 Tie it together with rope/nails. ____ 5 Bang it in with string/a hammer. ____ 6 Make a hole with thread/a drill. ____ 7 Stick it together with Sellotape/wire. ____ 8 Loosen the screw/cotton. ____

①When I was a boy growing up off the grid in the Commonwealth of Virginia, the men I knew labored with their bodies from the first rooster crow in the morning to sundown. ②They were marginal farmers, shepherds, just scraping by, or welders, steelworkers, carpenters; ③they built cabinets, dug ditches, mined coal, or drove trucks, their forearms thick with muscle. ④They trained horses, stocked furnaces, made tires, stood on assembly lines, welding parts onto refrigerators or lubricating car engines. ⑤In the evenings and on weekends, they labored equally hard, working on their own small tract of land, fixing broken-down cars, repairing broken shutters and drafty windows. ⑥In their little free time, they drowned their livers in beer from cheap copper mugs at a bar near the local brewery or racecourse. (Para.1) ①The bodies of the men I knew were twisted and wounded in ways visible and invisible. ②Heavy lifting had given many of them spinal problems and appalling injuries. ③Some had broken ribs and lost fingers. ④Racing against conveyor belts had given some ulcers. ⑤Their ankles and knees ached from years of standing on concrete. ⑥Some had partial vision loss as the glow of the welding flame damaged their optic receptors. ⑦There were times, studying them, when I dreaded growing up. ⑧All around us, the fathers always seemed older than the mothers. ⑨Men wore out sooner, being martyrs of constant work. ⑩Only women lived into old age. (Para.2) ①There were also soldiers, and so far as I could tell, they scarcely worked at all. ②But when the shooting started, many of them would die for their patriotism in fields and forts of foreign outposts. ③This was what soldiers were for - they were tools like a wrench, a hammer or a screw. (Para.3) These weren't the only destinies of men, as I learned from having a few male teachers, from reading books and from watching television. But the men on television - the news commentators, the lawyers, the doctors, the politicians who levied the taxes and the bosses who gave orders - seemed as remote and unreal to me as the figures in old paintings. I could no more imagine growing up to become one of these sophisticated people than I could imagine becoming a sovereign prince. (Para.4)