 |
| |||
| maximum clearance | |||
| 最大 间距: 10 phrases in 6 subjects |
| Automobiles | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Metallurgy | 2 |
| Plastics | 2 |
| Technology | 3 |
| Telecommunications | 1 |
|
| |||
| maximum clearance | |||
| 最大 间距: 10 phrases in 6 subjects |
| Automobiles | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Metallurgy | 2 |
| Plastics | 2 |
| Technology | 3 |
| Telecommunications | 1 |