 |
| |||
| technical grade | |||
| техническая категория: 5 phrases in 5 subjects |
| Construction | 1 |
| Measuring instruments | 1 |
| Military | 1 |
| Oil and gas | 1 |
| Oil processing plants | 1 |
|
| |||
| technical grade | |||
| техническая категория: 5 phrases in 5 subjects |
| Construction | 1 |
| Measuring instruments | 1 |
| Military | 1 |
| Oil and gas | 1 |
| Oil processing plants | 1 |