 |
| safety alarm: 21 phrases in 12 subjects |
| Armored vehicles | 1 |
| Automobiles | 1 |
| Electrical engineering | 1 |
| Electronics | 4 |
| Energy industry | 2 |
| Firefighting and fire-control systems | 2 |
| Nuclear physics | 1 |
| Oil / petroleum | 1 |
| Production | 2 |
| Technology | 1 |
| Telecommunications | 4 |
| Transport | 1 |