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vertical drop : 13 phrases in 9 subjects |
| Construction | 1 |
| Hydroelectric power stations | 1 |
| Mechanics | 1 |
| Metallurgy | 4 |
| Oil / petroleum | 1 |
| Refrigeration | 1 |
| Scuba diving | 1 |
| Submarines | 1 |
| Technology | 2 |
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