问题
单项选择题
What is the most important marker-related factor to the transport cost?（）
A.Location of market
B.Government regulation
C.Competition
D.Seasonality of products flow
答案
参考答案：C
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What is the most important marker-related factor to the transport cost?（）
A.Location of market
B.Government regulation
C.Competition
D.Seasonality of products flow
参考答案：C