 |
| |||
| total hours | |||
|
总时 数 : 17 phrases in 12 subjects |
| Advertising | 1 |
| Agriculture | 2 |
| Automobiles | 1 |
| Aviation | 2 |
| Electric machinery | 1 |
| Electronics | 1 |
| Fishery fishing industry | 2 |
| Nautical | 1 |
| Project management | 1 |
| Space | 2 |
| Technology | 2 |
| Telecommunications | 1 |
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