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平均时 数 : 20 phrases in 10 subjects |
| Artificial intelligence | 1 |
| Business | 1 |
| Earth sciences | 2 |
| Economy | 3 |
| Electronics | 3 |
| International trade | 1 |
| Metallurgy | 1 |
| Power system protection | 1 |
| Project management | 1 |
| Technology | 6 |
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