操作]时间 : 80 phrases in 23 subjects |
Agriculture | 2 |
Air defense | 1 |
Architecture | 2 |
Automobiles | 1 |
Aviation | 10 |
Business | 3 |
Chemistry | 1 |
Commerce | 2 |
Economy | 2 |
Electric machinery | 1 |
Electronics | 2 |
General | 1 |
Geophysics | 2 |
Hydroelectric power stations | 5 |
Information technology | 1 |
Law | 1 |
Management | 2 |
Metallurgy | 4 |
Oil processing plants | 2 |
Project management | 1 |
Space | 1 |
Technology | 24 |
Telecommunications | 9 |