 |
|
indicator board : 10 phrases in 5 subjects |
| Air defense | 1 |
| Automobiles | 6 |
| Electronics | 1 |
| Firefighting and fire-control systems | 1 |
| Metallurgy | 1 |
|
|
indicator board : 10 phrases in 5 subjects |
| Air defense | 1 |
| Automobiles | 6 |
| Electronics | 1 |
| Firefighting and fire-control systems | 1 |
| Metallurgy | 1 |