Вопрос № 223264 - Английский язык
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No doubt colour television will eventually supersede black-and-white transmissions. But there are other revolutionary developments to come, such as the “flat” screen - it will replace the conventional receiver box with its cathode-ray tube. The first screen, which can be hung on the wall like a picture, may be no more than 2 to 3 inches thick. It has a fluorescent coating like conventional tubes, but the electrons from the cathode move almost parallel with it instead of striking it at a right angle. They start their journey from an electronic “gun” at the top behind the screen, shooting downwards; at the bottom they are reflected by a “reversing lens” to travel vertically upwards along the screen, which they eventually hit by the influence of a grid of conductors which accumulate electric charges from the electron beam and give them off to the screen. The flat screen will be especially suitable for colour reception.
No doubt colour television will eventually supersede black-and-white transmissions. But there are other revolutionary developments to come, such as the “flat” screen - it will replace the conventional receiver box with its cathode-ray tube. The first screen, which can be hung on the wall like a picture, may be no more than 2 to 3 inches thick. It has a fluorescent coating like conventional tubes, but the electrons from the cathode move almost parallel with it instead of striking it at a right angle. They start their journey from an electronic “gun” at the top behind the screen, shooting downwards; at the bottom they are reflected by a “reversing lens” to travel vertically upwards along the screen, which they eventually hit by the influence of a grid of conductors which accumulate electric charges from the electron beam and give them off to the screen. The flat screen will be especially suitable for colour reception.
Варианты ответов
- The first “flat” screen may be no more 2 to 3 inches thick and can be hung on the wall.
- Black-and-white transmissions will be especially suitable for colour reception.
- The cathode-ray tube will replace the “flat” screen.
- There are no other revolutionary developments to come in colour television.
Правильный ответ
Вопрос задал(а): Анонимный пользователь, 10 Ноябрь 2020 в 00:16
На вопрос ответил(а): Анастасия Степанова, 10 Ноябрь 2020 в 00:16
На вопрос ответил(а): Анастасия Степанова, 10 Ноябрь 2020 в 00:16