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balance- type : 30 phrases in 12 subjects |
| Aviation | 3 |
| Chemistry | 1 |
| Electronics | 2 |
| Engineering geology | 1 |
| Hydroelectric power stations | 2 |
| Mechanics | 1 |
| Metallurgy | 3 |
| Oil / petroleum | 1 |
| Shipbuilding | 3 |
| Space | 4 |
| Technology | 7 |
| Wind Energy | 2 |
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