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switch on : 62 phrases in 18 subjects |
| Agriculture | 2 |
| Automobiles | 2 |
| Chemistry | 2 |
| Coal | 1 |
| Communications | 2 |
| Computers | 1 |
| Earth sciences | 2 |
| Education | 1 |
| Electronics | 10 |
| General | 2 |
| Information technology | 3 |
| Mechanic engineering | 4 |
| Medical | 2 |
| Microelectronics | 3 |
| Optics branch of physics | 1 |
| Rail transport | 1 |
| Technology | 15 |
| Transport | 8 |