问题
单项选择题
The main disadvantage is（）in global logistics.
A.unqualified products
B.Different languages
C.Transportation delayed
D.Unreliable delivery of goods
答案
参考答案：D
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The main disadvantage is（）in global logistics.
A.unqualified products
B.Different languages
C.Transportation delayed
D.Unreliable delivery of goods
参考答案：D