main board : 32 phrases in 14 subjects |
Cinematography | 1 |
Computers | 3 |
Electronics | 2 |
Energy industry | 4 |
Information technology | 1 |
Military | 2 |
Nautical | 3 |
Programming | 2 |
Sakhalin | 1 |
Technology | 4 |
Telecommunications | 2 |
Thermal engineering | 3 |
Vibration monitoring | 2 |
Weapons of mass destruction | 2 |