學生每周使用計算機時間增加的原因英語作文

篇一：英語_科技英語寫作習題以及答案

練習1

I、在下列每個句子的空白處填上適當的冠詞如果必要的話)，然後將句子譯成漢語：

1. There has been __an___ ever greater interest in this subject.

2. The power rating is the maximum power the resistor can safely dissipate without too great __a_ rise in temperature.

3. Its primary disadvantage is __an___ increase in noise.

4. __The___ successful design of the equipment requires ___a__ detailed knowledge of the performance specifications.

5. In __the___ Bohr model of the hydrogen atom, ___a__ single electron revolves around ___a__ single proton in a circle of radius R.

6. The unit of frequency is ___the__ hertz.

7. If __a___ voltage is applied across ___a__ circuit, ___an__ electric current will flow in __the___ circuit.

8. ____ Fig. 5-1 shows _____ Oersted’s experiment.