• 2021-04-14
    How much is the percent of air transportation in all modes? ()
  • A

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    • 0

      Among cargo transportation modes, which is NOT involved?

    • 1

      I don’t like to live in the big cities, for there is too much<br/>air ____. A: traffic B: pollution C: transportation D: sightseeing

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      Among the following modes of transportation, ( ) is the earliest mode of transportation used by human beings, but it still plays an important role in the modern transportation system. A: Railway transportation B: Water transportation C: Road transportation D: Pipeline transportation

    • 3

      ______is largely used for freight. A: Rail transportation B: Water transportation C: Truck transportation D: Air transportation

    • 4

      Which of the following transportation methods has the lowest cost in long-distance transportation? A: Railway transportation B: Maritime transportation C: Air transportation D: Road transportation