[单选题]It is important to note that from the core company’s perspective, the supply chain includes （）, upstream supplier and down stream customers.

正确答案 ：A

Internal functions

[单选题]What is the meaning “speed is not of primary importance”? （）

正确答案 ：B

Speed is not the most important

[单选题]（）is the motor carrier service between different cities domestically.

正确答案 ：C

Domestic intercity trucking

[单选题]Which mode of transportation is most flexible?（）

正确答案 ：D

Motor

[单选题]（）is used to protect goods not to be deteriorated like food and medicine.

正确答案 ：C

Vacuum packaging

解析：中文：真空包装可防止物品不变坏，包括食品和药品。

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