Many of polymers are organic compounds that are chemically based on（）,（）, and other nonmetallic elements_精华吧

Many of polymers are organic compounds that are chemically based on（）,（）, and other nonmetallic elements

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Many of polymers are organic compounds that are chemically based on（）,（）, and other nonmetallic elements

A.oxygen

B.hydrogen

C.carbon

D.nitrogen

正确答案：hydrogen；carbon

Tag：材料概论时间：2022-01-18 21:17:27

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