THE ENGINEERING PROFESSION
1. Engineering makes our life comfortable. Engineering developments include automobiles, computers, radio and television, airplanes and space crafts, mobile phones, air conditioning and refrigeration systems, water supply networks, nuclear reactors, highways, laser and fiber optics, petroleum and gas refineries, tools for medical diagnostics, high performance materials, and so on. Engineers apply science and technology to find solutions to everyday problems.
2. The major branches of engineering are chemical, civil, electrical and mechanical engineering. Chemical engineers apply the principles of mathematics, chemistry and physics for operating chemical process at an industrial scale. Civil engineers design, construct, and maintain buildings, railways, roads, bridges, dams, tunnels, and water supply systems. Electrical engineers design, develop, test and supervise electrical and electronic systems, for example, electrical circuits, computer systems, optical fibers, electromechanical devices, generators, and telecommunications. Mechanical engineers design and manufacture the dynamic structures including hand-operated tools and complicated systems (compressors, engines, turbines, weapons, and agricultural machinery).
3. Numerous branches of engineering emerged due to the rapid development of technologies. For example, biomolecular, material and corrosion engineering emerged from chemical engineering; environmental, transport, water resources and utility engineering are subdisciplines of civil engineering; optical, computer and power engineering are the parts of electrical engineering; acoustical, optomechanical engineering and sports engineering are the constituents of mechanical engineering. The traditional fields of engineering tend to combine with the new ones. For example, Earth systems engineering and management combine environmental science, engineering studies and ethics; robotics involves computer science skills, electrical and mechanical engineering.
4. Science enables people to understand the outside world, and engineering applies the scientific principles by designing and constructing new things for a safe and comfortable human life.
Choose the statement which best expresses the main idea of the passage: