часть)
This reprogramming (programmable automation) and changeover take a period of non-productive time. Production rates in programmable automation are generally lower than in fixed automation, because the equipment is designed to facilitate product changeover rather than for product specialization. A numerical-control machine-tool is a good example of programmable automation. The program is coded in computer memory for each different product style and the machine-tool is controlled by the computer programme.
Flexible automation is a kind of programmable automation. Programmable automation requires time to re-program and change over the production equipment for each series of new product. This is lost production time, which is expensive. In flexible automation the number of products is limited so that the changeover of the equipment can be done very quickly and automatically. The reprogramming of the equipment in flexible automation is done at a computer terminal without using the production equipment itself. Flexible automation allows a mixture of different products to be produced one right after another.
2.ТЕСТЫ.
TEST1. PRESENT PERFECT / PRESENT PERFECT CONTINUOUS
1.He knows Africa well because he (travel | a lot there.
A has been travelling
В has travelled '
2.You (write) this composition for two hours and can't complete it.
A have been writing В have written
3.-John is still repairing his car.
-He must be tired. He (repair) it all day.
A has repaired
В has been repairing
4. Alice promised to come, but she's absent. Something (happen) to her.
A has been happening В has happened
5.The children are drawing. They (draw) since they came home.
A have been drawing В have drawn
6.... they (tell) anything about their summer plans? A Have they been telling В Have they told
7. My aunt (have) the big house in the country.
A has always been having В has always had
Задание 2. Напишите время.
a)8.15
b)1.30
c)7.45
d)22.00
e)It`s a quarter to ten.
Напишите даты.
a)1 сентября 1974
b)31 декабря 1905
c)2 ноября 1634
d)10мая 1900
Напишитечислительные.
6,372,000
35.25
0.1
Five and two thirds
57th
2.45
Sixty thousand two hundred and fifty
Экзаменационныйбилет №16
1.ТЕКСТ «AUTOMATIONININDUSTRY.»(1часть)
FIXED AND PROGRAMMABLE AUTOMATION
Automated production lines
An automated production line consists of a series of workstations connected by a transfer system to move parts between the stations. This is an example of fixed automation, since these lines are set up for long production runs, making large number of product units and running for several years between changeovers. Each station is designed to perform a specific processing operation, so that the part or product is constructed stepwise as it progresses along the line. A raw work part enters at one end of the line, proceeds through each workstation and appears at the other end as a completed product. In the normal operation of the line, there is a work part being processed at each station, so that many parts are being processed simultaneously and a finished part is produced with each cycle of the line. The various operations, part transfers, and other activities taking place on an automated transfer line must all be sequenced and coordinated properly for the line to operate efficiently.
Modern automated lines are controlled by programmable logic controllers, which are special computers that can perform timing and sequencing functions required to operate such equipment. Automated production lines are utilized in many industries, mostly automobile, where they are used for processes such as machining and pressworking.
2.ТЕСТЫ.
TEST 1.PAST SIMPLE / PAST CONTINUOUS / PAST PERFECT CONTINUOUS /
PAST PERFECT
I (talk) over the phone when they brought me the letter.
A talked B had talked Сhad been talking D was talking
They (sit) in the room when the taxi arrived.
A sat Вhad sat Сhad been sitting D were sitting
He quickly forgo: everything he (learn) at school.
A learnt Вhad learnt
Сhad been learning D was learning
4.I visited Brazil in April. I (stay) at a nice hotel for a fortnight
A stayed Вhad stayed Сhad been staying D was staying
5.I(stay) at the hotel for a fortnight when I received your letter.
A stayed Вhad stayed Сhad been staying D was staying
6.The musician (play) the piano for a whole hour when we came in.
A played Вhad played Сhad been playing D was playing
7. Alice closed the magazine and rose from the sofa on which f she (lie) for more than two hours. A lay Вhad lain Сhad been lying D was lying
8. A man (be) unconscious for a few minutes when an ambulance arrived.
A was Вhad been Сhad being
9. We (walk) along a forest road for two hours when we saw a house.
A walked Вhad walked Сhad been walking D were walking
10.I (talk) over the phone for a whole hour when the porter knocked at the door.
A talked Вhad talked Сhad been talking D was talking
TEST 2. PLURAL (make plural form)
a baby 2. a pencil
A babysApenciles
B babies B pencils
a man 4. an umbrellas
A man Aumbrellaes
B men C mans B umbrellas C umbrells
5. a boy 6. a city
A boys A citys
B boies C boyes B cities C cityes
7. a mouse 8. A postman
A mouses A postman
B mice C mouss B postman C postman
9. a knife 10. a fish
A knifes A fish
B knifs C knives B fishes C fishs
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