Техническая эксплуатация транспортного радиоэлектронного оборудования (по видам транспорта)
Автоматика и телемеханикана транспорте
AUTOMATING THE RAILWAYS.
At present, control of the high-speed trains is semi-automatic since they are automatically forced to comply with permissible speeds at any given instant. Stops at station platforms are under the driver’s control. The whole line in Japan, for example, is directly controlled from Tokyo and for this purpose is divided into four systems. The state of the line is continuously surveyed and information is transmitted at high speed to the control centre. Each train automatically identifies itself by generating a unique frequency as it passes fixed ground equipment*, and the information is displayed on the control system at Tokyo.
Найдите информацию которая содержится в тексте
semi-automatic
high-speed
driver’s control
divided into three systems
Ответе на вопрос выбрав нужное
Does ache train automatically identifies itself?
Yes, it does
No, it doesn’t
Not said
Организация перевозок и управление на транспорте (по видам)
MOVEMENT OF FREIGHT TRAFFIC
Movement of freight starts at the initial terminal where the train is made up in the classification yard. Here cars are classified or sorted, those for the same destinations being collected in groups or blocks. These are assembled on a departure track.
The number of cars assigned to a train is related as nearly as possible to the tonnage capacity of the locomotive. After assembling the various blocks of cars on the track from which the train is to leave, they are coupled up with air brake connections, then tested and inspected. Detective cars are quickly repaired; if this requires more time than is available such cars are cut out and dispatched in a later train. The engine crew boards the train at the locomotive terminal. They pick up the caboose with train and attach it to the rear end of the train, or a yard engine may handle the caboose.
Prior to leaving the yard terminal office the freight conductor receives a series of sheets called billing1, which show the number, character and destination of each car in his train, and checks the train for correct make-up or «consist»2. When the train is ready to move, a signal from the conductor to the engineer starts it on its way. Except for stops for water or fuel a through freight train will run normally to the next intermediate terminal without stop or change in its consist. The conductor makes out what is called a wheel report3, listing the initials and numbers if each car, weight if the car, weight of lading and the points between which the train moves it. These wheel reports are the records from which the car accountant keeps track of car movement and the statistical department of the railroad compiles freight train and traffic statistics. At intermediate terminals cars consigned to destinations within the particular territory are cut out of the train. New cars at intermediate terminals may be added. The train progresses by successive stops through other intermediate terminals to final destination, where it moves to the terminal yard.
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Найдите информацию которая содержится в тексте
Movement of freight
tonnage capacity
engine
car movement
Ответе на вопрос выбрав нужное : Where does the movement of freight start?
At the initiation terminal
Freight yard
Railway station
Компьютерные сети
Memory is the system of component of the computer in which information is stored. There are two types of computer memory: RAM and ROM.
RAM (random access memory) is the volatile computer memory, used for creating, loading, and running programs and for manipulating and temporarily storing data;
ROM (read only memory) is nonvolatile, no modifiable computer memory, used to hold programmed instructions to the system.
The more memory you have in your computer, the more operations can you perform.
Найдите информацию которая содержится в тексте
random access memory
read only memory
operations
data
Ответе на вопрос выбрав нужное: What is ROM?
It is nonvolatile computer memory, used for temporarily storing data.
It is volatile computer memory, used for creating, loading, and running programs and for manipulating and temporarily storing data.
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It is main memory.
It is nonvolatile, nonmodifiable computer memory, used to hold programmed instructions to the system.
Техническая эксплуатация транспортного радиоэлектронного оборудования (по видам транспорта)
A varying current from '' output'' transformer passing through the voice coil, varying forces are acting which cause it to vibrate back and forth. As the cone is driven back and forth, its large area sets air into vibration.
It is a well-known fact that large sized loud speakers are especially good at reproducing and dispersing low- pitched sounds. Due to diffraction and interference, however, high-pitched sounds are emitted in a narrow beam and in a forward direction only. Loud speakers with small cones are especially good on the high- pitched notes but are poor at reproducing the low ones.
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