[单选题]Packaging performs 2 basics functions---marketing and （）.

正确答案 ：D

Logistics

[单选题]Crude oil carriers often use （）

正确答案 ：D

Supertankers

[单选题]Where is the most air freight shipped in the passenger aircraft?（）

正确答案 ：C

In the lower part

[单选题]How long the haul for international deep-sea movement usually? （）

正确答案 ：D

Thousands of kilometers

[单选题]How many tons does the cargo 737 carry?（）

正确答案 ：C

More than 100 tons

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