Contents 1
Visisting people abroad ....................................................7 An exchange visit ..................................................................................7 Information about Bristol ....................................................................8 Meeting the Grangers..........................................................................10 The telephone conversation ................................................................12 Describing the way ..............................................................................13 Preparing the trip to the North ..........................................................14
2
Cars and Tools ................................................................17 Parts of the car ....................................................................................17 Is it the alternator? ..............................................................................18 Tools ....................................................................................................20 Car quiz................................................................................................22
3
Measuring ......................................................................25 Exact measuring units ........................................................................25 Basic units ............................................................................................27 Measuring distances ............................................................................28 Measuring weight ................................................................................31 Measuring temperature ......................................................................32 Measuring electricity............................................................................34
4
Construction....................................................................37 Parts of a house....................................................................................37 Careers in building ..............................................................................38
5
Hardware ........................................................................45 Components of a personal computer..................................................45 Trouble with the sound card ..............................................................47 Changing a sound card ......................................................................49 Troubleshooting ..................................................................................50
6
Software ..........................................................................53 Kinds of computer software ................................................................53 The computer system at Kristin’s company........................................55 CAD - Kristin’s new subject ................................................................57 2D and 3D............................................................................................59
4
7
Power Tools and Machines ............................................61 Portable electric power tools ..............................................................61 Electric drills ........................................................................................62 Portable circular saw............................................................................63 Safety regulations ................................................................................65 Machines for working on metal ..........................................................67 In the training workshop ....................................................................69 Finding the defect................................................................................70 Replacing the belt ................................................................................71
8
Environment ..................................................................73 Environmental problems ....................................................................73 An interview ........................................................................................74 Environmental impacts on air ............................................................75 Environmental impacts on water ........................................................78 Continuing the interview ....................................................................79
9
Biotechnology ................................................................83 Biotechnology in our daily lives ..........................................................83 Development of biotechnology............................................................84 Genetically modified foods and enzymes............................................84 Environmental protection ..................................................................86 Medicine ..............................................................................................87 Large - scale processes ........................................................................88 Basics of molecular genetics ................................................................90
10
Energy ............................................................................95 Consumers of energy ..........................................................................95 How electric energy is generated........................................................96 How electricity is transmitted..............................................................97 Alternative energies ..........................................................................100 Wind energy ......................................................................................101 Hydrogen – Energy of the future ....................................................104
11
Automotive Technology................................................109 The workshop’s inside ......................................................................109 The first day at the workshop ..........................................................110 The tool trolley’s inside ....................................................................111 Car technology ..................................................................................112 The engine of a car............................................................................114 At the vocational training centre ......................................................117 The brake ..........................................................................................119
5
12
Working on Metal ........................................................123 Drilling, milling and turning ............................................................123 Sharpening of twist drills ..................................................................124 Drilling thin materials ......................................................................125 Milling ................................................................................................126 Cylindrical milling ............................................................................127 Face milling........................................................................................128 Turning..............................................................................................129
13
Electrical Engineering ..................................................133 Measuring instruments......................................................................133 Digital multimeters ............................................................................134 Multimeter specifications (excerpt) ..................................................135 Electric motors ..................................................................................136 Squirrel - cage motors ......................................................................137 Mobile phones....................................................................................138 Protection against electric shock ......................................................140 Electronic components ......................................................................142 Resistor colour coding system ..........................................................144
Dictionary English - Greek......................................................147 Dictionary Greek - English......................................................161 ∂˘ÚÂÙ‹ÚÈÔ ËÁÒÓ ÂÈÎfiÓˆÓ ......................................................172 ¶›Ó·Î˜ ÂÚȯÔÌ¤ÓˆÓ ÙˆÓ Û˘Óԉ¢ÙÈÎÒÓ CDs......................173
6