问题
单项选择题
（）has three specific points: fixed line, fixed ports and announcing shipping time in advance.
A.Liner transport
B.Line ship
C.Line container
D.Line
答案
参考答案：A
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（）has three specific points: fixed line, fixed ports and announcing shipping time in advance.
A.Liner transport
B.Line ship
C.Line container
D.Line
参考答案：A