Specialist Reading
Date: 2015-10-07; view: 518.
Choose a correct modal verb
Match the English variant with Russian equivalents.
| 1. То cause acceleration... | A. (Для того), чтобы получить это соединение... |
| 2. То observe this phenomenon… | B. (Для того), чтобы продолжить процесс... |
| 3. То obtain this compound… | C. (Для того), чтобы установить оборудование... |
| 4. То install the equipment... | D. (Для того), чтобы внедрить изобретение... |
| 5. То continue the process... | E. (Для того), чтобы вызвать ускорение... |
| 6. То introduce the invention... | F. (Для того), чтобы наблюдать это явление... |
1. Они должны были согласиться.— a. They have to agree, b. They had to agree, c. They must agree, d. They could agree.
2. Он может сделать это.— a. He can do this. b. He could do this. c. He is able to do this. d. He must do this.
21. Read the text “The Forward-Biased P-N Junction” only once. How much can you remember? Answer these questions without additional reading.
1. When are holes caused to drift towards the junction?
2. What end of the crystal are electrons repelled from?
3. What reduces both the width of the depletion layer and the height of the potential barrier?
4. What allows majority charge carriers of lower energy to cross the junction?
5. Why is there a net majority charge carrier current across the junction?
6. How does the current change entering the P-type region and leaving the N-type region?
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