safety switch : 38 phrases in 13 subjects |
Armored vehicles | 2 |
Astronautics | 1 |
Automated equipment | 2 |
Automobiles | 5 |
Electricity | 1 |
Makarov | 4 |
Mechanics | 1 |
Military | 6 |
Nautical | 4 |
Rail transport | 1 |
Refrigeration | 2 |
Technology | 8 |
Telecommunications | 1 |