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| 检查环: 38 phrases in 17 subjects |
| Aviation | 4 |
| Chemistry | 1 |
| China | 1 |
| Communications | 2 |
| Drilling | 1 |
| Earth sciences | 1 |
| Ecology | 1 |
| Economy | 1 |
| Electronics | 2 |
| Fish farming pisciculture | 1 |
| Ice hockey | 1 |
| Oil / petroleum | 1 |
| Shipbuilding | 2 |
| Space | 3 |
| Surgery | 1 |
| Technology | 14 |
| Textile industry | 1 |