| |||
| 选择方法 | |||
|
selective method : 21 phrases in 7 subjects |
| Air defense | 1 |
| Chemistry | 1 |
| Electronics | 1 |
| Genetics | 1 |
| Metallurgy | 4 |
| Sealing | 1 |
| Technology | 12 |
| |||
| 选择方法 | |||
|
selective method : 21 phrases in 7 subjects |
| Air defense | 1 |
| Chemistry | 1 |
| Electronics | 1 |
| Genetics | 1 |
| Metallurgy | 4 |
| Sealing | 1 |
| Technology | 12 |