生态设计通常不以()为主体开展研究 Which of following is usually excluded as the object of a
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生态设计通常不以()为主体开展研究 Which of following is usually excluded as the object of a DfE study()
A.产品 Products
B.服务 Services
C.工艺 Process
D.环境要素 Environmental elements

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整体设计观
