问题
单项选择题
What are transported mainly by water? ()
A. Raw materials
B. Heavy, bulky and low value commodities
C. Semi-processed
D. Great amount goods
答案
参考答案:B
What are transported mainly by water? ()
A. Raw materials
B. Heavy, bulky and low value commodities
C. Semi-processed
D. Great amount goods
参考答案:B