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Security Control : 67 phrases in 26 subjects |
| Air defense | 2 |
| Architecture | 1 |
| Automobiles | 1 |
| Aviation | 8 |
| Business | 3 |
| China | 2 |
| Commerce | 1 |
| Cryptography | 14 |
| Economics | 2 |
| Electricity | 1 |
| Electronics | 15 |
| Environment | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Finances | 1 |
| General | 1 |
| Geography | 1 |
| Information technology | 2 |
| Librarianship | 1 |
| Military | 1 |
| Public security | 1 |
| Rail transport | 1 |
| Securities | 2 |
| Space | 1 |
| Technology | 1 |
| Textile industry | 1 |
| United Nations | 1 |