 |
| |||
| acknowledge request; acknowledgement request | |||
| требование подтверждения: 20 phrases in 10 subjects |
| Aviation | 1 |
| Finances | 1 |
| Firefighting and fire-control systems | 1 |
| General | 2 |
| Mass media | 3 |
| Military | 1 |
| Occupational health & safety | 1 |
| Oil / petroleum | 2 |
| Programming | 7 |
| Quality control and standards | 1 |