How much is the percent of air transportation in all modes? （）
举一反三
- choose the modes of transportation A: Highway transportation B: Railway transportation C: Water transportation D: Air transportation E: Pipeline transportation
- Among the five modes of transportation, which one is the fastest? A: Road transportation B: Air transportation C: Railway transportation D: Pipeline transportation
- Which of the following modes of transportation is most suitable for natural gas transportation? A: Road transportation B: Air transportation C: Railway transportation D: Pipeline transportation
- The freight rate of air express is much higher than that of other air transportation mode.
- The freight rate of air express is much higher than that of other air transportation mode. A: 正确 B: 错误