问题
单项选择题
Cost of pipeline is very different of underground conditions. Is it right? （）
A.Not
B.Yes
C.They can’t compare
D.Not discussion in the paragraph
答案
参考答案：B
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Cost of pipeline is very different of underground conditions. Is it right? （）
A.Not
B.Yes
C.They can’t compare
D.Not discussion in the paragraph
参考答案：B