中国在创新方面面临的问题有（）。

答案查看网，轻松搜题/搜资源

【多选题】【消耗次数：1】

中国在创新方面面临的问题有（）。

① A.技术“壁垒”

② B.投入“高山”

③ C.人才“门槛”

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