| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | turbojet | United States | Turbojet engines are widely used in both military and commercial aircraft in the United States. | 3 |
| 2 | turbojet | Developing countries | The turbojet concept is unfamiliar and has limited practical relevance in developing countries. | 1 |
| 3 | turbojet | Tropical countries | Turbojet engines are not commonly used for everyday transportation in tropical countries due to their high fuel consumption. | 1 |