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automatic elevators begin to appear as early as the 1930s their development being hastened by striking elevator operators whits brought large cities development on skyscrapers (and therefore their elevators) such as new your and chicago to their knees. these electromechanical systems used relay logic circuits of increasing complexity to control the speed, position and door operation of an elevator or bank of elevators.
the otis autotronic system of the early 1950s brought the earliest predictive system which could anticipate traffic patterns within a building to deploy elevator movement in the most efficient manner. relay-controlled elevator systems remained common until the 1980s and their gradual replacement with solid-state, microprocessor-based controls are now the industry standard. most older, manually-operated elevators have been retrofitted with automatic or semi-automatic controls.
1 - Mr Holstel asked me if he can borrow my newspaper
2- Tom said that his secretary has already sent all the letters
3- Alice said that she's going to study Medicine next year
4- Louis said that he loves meeting new people at university
5- my mom ordered me to do the cleaning and go shopping this morning
6- Miranda asked peter how long has he spent in Brighton
7- the doctor asked Jennifer what time she usually go to bed
8- kate said that her brother just come back from ireland
9- my father said that the plane is leaving in half an hour
10- alan asked me why don't i go with him to the cinema
11- nancy said that her husband is reading an interesting novel at the moment
12- martha told her daughter to get dressed they are going out soon
13- George said that his girlfriend is inviting him to dinner tonight
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