How many categories are there in water transport?（） 2。 3。 4。 Not available in the paragraph。
How many tons does the cargo 737 carry? （） 100 tons。 Not clear。 more than 100 tons。 I don’t know。
Where is the most air freight shipped in the passenger aircraft?（） separately。 Not clear。 In the lower part。 Not mention here。
Loss and damage ration for motor are lower than any other modes. Is it correct?（） Yes。 Depend。 Not。 I don’t know。
The international trade needs the （） to fulfill its transaction. Great amount of shipped。 Tracks。 Logistics。 Ships。
what kind of products do the air carriers deliver? （）
