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分级 试验 : 17 phrases in 8 subjects |
| Bridge construction | 3 |
| Construction | 1 |
| Engineering geology | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Geology | 1 |
| Space | 2 |
| Technology | 7 |
| Textile industry | 1 |
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