 |
| |||
| 容许标准 | |||
|
допустимая норма : 13 phrases in 6 subjects |
| Chemistry | 1 |
| Environment | 1 |
| Food service and catering | 2 |
| General | 7 |
| Oil processing plants | 1 |
| Thermal engineering | 1 |
|
| |||
| 容许标准 | |||
|
допустимая норма : 13 phrases in 6 subjects |
| Chemistry | 1 |
| Environment | 1 |
| Food service and catering | 2 |
| General | 7 |
| Oil processing plants | 1 |
| Thermal engineering | 1 |