operating performance : 26 phrases in 13 subjects |
Accounting | 3 |
Aviation | 1 |
Business | 4 |
Economics | 2 |
Electric machinery | 3 |
Electricity | 1 |
Finances | 3 |
Hydrology | 1 |
International trade | 1 |
Refrigeration | 1 |
Road construction | 1 |
Shipbuilding | 1 |
Technology | 4 |