根据本课程，随着制造业的转型，产品也在不断革命，制造业第三个阶段的产品是（）。

答案查看网，轻松搜题/搜资源

【单选题】【消耗次数：1】

① 简单机械产品

② 电子产品

③ 智能联网设备

④ 产品系统

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