 |
| |||
| line service | |||
| линейная служба: 12 phrases in 4 subjects |
| Communications | 1 |
| Firefighting and fire-control systems | 1 |
| General | 5 |
| Oil and gas | 5 |
|
| |||
| line service | |||
| линейная служба: 12 phrases in 4 subjects |
| Communications | 1 |
| Firefighting and fire-control systems | 1 |
| General | 5 |
| Oil and gas | 5 |