You can use online sources or books as per the requirements of your instructor.
你可以用在线资源或者书籍作为指导资料。
The main raw materials, water , electricity, gas and transportation requirements and sources.
主要原材料、水、电、气运输等需要量和来源。
The main raw materials, water , electricity, gas and transportation requirements and sources.
主要原材料、水、电、气运输等需要量和来源。
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