单项选择题

How long the haul for international deep-sea movement usually?（）

A.Very long
B.Ten thousands of miles
C.Thousands of miles
D.Thousands of kilometers

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单项选择题

A.In international deep sea
B.In lakes
C.In river and canals
D.Coastal ocean

单项选择题

A.Speed is important
B.Speed is not the most important
C.Speed is mainly important
D.Speed is first importan

单项选择题

A.Raw materials
B.Heavy, bulky and low value commodities
C.Semi-processed
D.Great amount goods