Unit One
Text A Alfred Nobel--A Man of Contrasts
Text B He Led a Useful Life
Unit Two
Text A Alexander Graham Bell
Text B The Laser
Unit Three
TextA Oxidation
Text B Radar
Unit Four
Text A This is M.I.T.
Text B Educational Resources at M.I.T.
Unit Five
Text A Water Supplies--A Growing Problem
Text B The Great Changes of the Surface of the Earth
Unit Six
Text A What Is Artificial Intelligence?
Text B Science and the Future
Unit Seven
Text A Selecting a Personal Computer System
Text B Multimedia
Unit Eight
Text A Database
Text B Computer Viruses
Unit Nine
Text A Introduction to Control Engineering
Text B Applications of Automatic Control
Unit Ten
Text A What Is Electricity?
Text B Electricity and Electronics
Unit Eleven
Text A Electric Power System
Text B Electric System Monitoring
Unit Twelve
Text A Hydro-electric Power
Text B Direct Current Generators and Motors
Unit Thirteen
Text A How a Coal-fired Power Plant Works
Text B Fossil-fuel Boilers for Electric Utilities
Unit Fourteen
Text A Nuclear Power Plants
Text B Solar Energy
Unit Fifteen
Text A Electric Power Substations and Transformers
Text B Computers and the Electric Power Indutry
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