帅一般
幼苗
共回答了18个问题采纳率:72.2% 举报
Highway projects,as a result of huge investment,is a very complex project.The construction cycle from planning and design to construction normally takes 3 to 5 years.
It takes 5 to 8 years or even longer for it to operate.
The character that long construction period decided the construction of highway projects must be phased investment,sub-building,and complete it step-by-step in order to reduce the enormous risks.
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1年前
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