2. The second industrial revolution. The second industrial revolution means that European countries, the United States and Japan completed bourgeois revolution or reform in the middle of19th century, which promoted economic development. 65438+At the end of 1960s, the second industrial revolution began. Mankind has entered the "electrical age".
3. The third scientific and technological revolution. Since the 1940s and 1950s, great breakthroughs have been made in the fields of atomic energy, computer, electronic technology, aerospace technology, molecular biology and genetic engineering, which indicates the arrival of new science and technology.
The third industrial revolution has higher and higher requirements for science and technology, and higher requirements for workers' occupations, so workers are required to gradually improve their academic qualifications.