амплитуда колебания: 36 phrases in 15 subjects |
Astronautics | 1 |
Aviation | 2 |
Chemistry | 2 |
Construction | 4 |
Electronics | 1 |
Finances | 1 |
Hydraulic engineering | 5 |
Mathematics | 2 |
Mechanic engineering | 2 |
Meteorology | 5 |
Physics | 3 |
Radio | 1 |
Surveying | 1 |
Technology | 5 |
Welding | 1 |