问题
单项选择题
（）has 3 specific points: fixed port, fixed line 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 3 specific points: fixed port, fixed line and announcing shipping time in advance.
A.liner transport
B.line ship
C.line container
D.line
参考答案：A