Письменно переведите текст. pentode when in an operating tube the screen-grid voltage is high, secondary emission does not return to the plate and passes to the screen grid. this re¬sults in a counter flow of electrons. to eliminate this counter flow, a third grid was placed between the plate and the screen grid and connected to the cathode. this grid is called a suppressor grid. since the suppressor grid has a negative potential it returns the secondary emission back to the plate and thus eliminates it in the tube. the tube containing electrodes - the cathode, the plate, the control grid, the screen grid and the suppressor grid - is called a pentode. the cathode emits electrons, the plate collects them, the control grid controls the flow of electrons, the screen grid helps the plate to collect electrons and reduces the capacity between the control grid and the plate, the suppressor grid eliminates the secondary emission.
“A boy and Karlsson-on-the-Roof” is a children's book. It was written by the Swedish author Astrid Lindgren. This book was very popular in the Soviet Union and now it is popular too. Main characters are a boy and Karlsson. Karlsson is a very short man who lives in a small house on the roof of a building in Stockholm. When Karlsson pushes a button on his stomach, it starts motor with a propeller on his back, and he can fly. A boy is the best friend of Karlsson. He is 7. I like this book. I like Karlsson because of his sense of humour, energy, and good nature.
calls - ед. число, 3-е лицо. Present Simple. to call
2. Уже в третий раз Билл звонил своему другу в этот вечер.
has phoned - ед. число, 3-е лицо. Present Perfect. to phone
3. Парламент возобновил чрезвычайные дебаты в минувшую пятницу.
resumed - Past Simple. to resume
4. Внедрение новых технологий будет развитию экономики.
will promote - Future Simple. to promote
5. Я никогда не видел г-н Джонсона таким грустным до нашей последней встречи.
had seen - Past Perfect. to see
6. Население мира растет очень быстро.
is rising - Present Continuous. to rise