[外语类试卷]雅思（听力）模拟试卷17及答案与解析.doc

1、雅思（听力）模拟试卷 17及答案与解析 一、 Listening Module (30 minutes maximum benefit will accrue to those who have attended higher education in a technical subject or who have experience in a related area. Typical attendees may include those in jobs which bring them into contact with electronics, such as drafts pers

2、ons, PCB designers, production and assembly personnel and software designers, those working with electronic products, such as managers and sales persons, those coming into electronics from a related field, such as scientists or mathematicians, and those simply curious to find out about this all-perv

3、asive technology. The benefits of this course are that, first, it gives you a quick insight into modem electronics. It also puts emphasis on practical devices and systems. Unlike many other courses, no prior knowledge is assumed, but previous exposure to school-level science and maths is assumed. Fo

4、urthly, it can be used as a refresher course. Fifth, there is the benefit of getting hands-on simulations and, finally, all delegates completing the course will receive a University of Oxford Certificate of Completion. The course will be presented by Brian Williams, who started his career working as

5、 an electronic engineer for British Aerospace. Brian then became a lecturer and has taught electronics at Oxford University wires used to transfer signals and voltage from one place or box or component to another; and boxes or components manipulating voltages, particularly amplifying them). Unit 2 t

6、akes a look at Ohms Law: The linear relationship of voltage & current and the concept of resistance. It also looks at resistors & resistor networks. Unit 3 focuses on Op-Amps, providing an introduction to the ideal op-amp and its applications. The next slide tells us that Unit 4 is concerned with ca

7、pacitors and AC circuits: the theory and applications of capacitors and their use in transient and AC circuits. Unit 5 looks at frequency response and filters, including both passive and active filters. Unit 6 takes a look at magnetism, inductors and transformers. Looking at this next slide, we can

8、see that Unit 7 covers RL & RLC circuits, including tuned filters and crossover networks. Unit 8 is entitled An Introduction to Semiconductors. It covers diodes and rectifiers-both theory and applications. This unit also looks at special purpose diodes. Unit 9 covers transistors, particularly bipola

9、r transistors including theory and typical circuits. The final unit, Unit 10, is a review unit with a little look at further applications. 31 【正确答案】 Overview of Electronics 32 【正确答案】 digital electronics 33 【正确答案】 book, CD-ROM 34 【正确答案】 yes 35 【正确答案】 prior knowledge 36 【正确答案】 refresher course 37 【正确答案】 electronic systems 38 【正确答案】 magnetism 39 【正确答案】 (An) Introduction to 40 【正确答案】 A review unit