Becky是MIT的学生，制造了新一代的3D打印机，用墨更少，也更加耐用。Becky, a student at MIT, invents a new generation 3D printer. It is cheaper, uses less ink, and lasts longer than existing alternatives. Becky决心利用这
除了市场规模和客户数量外，还有许多选择登陆市场的因素。There are many more factors that go into selecting your beachhead market than market size and number of customers in that market.
举一反三
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Kevin Anne Becky Dennis Kate
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Becky A: haspassedthedrivingtest. B: haswonagolfcompetition. C: hasgotengaged. D: isasusual. E: hashadaquarrelwithherboyfriend.
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3D生物打印就是利用3D打印机将（）分布在支架上培养（制造）人体器官的技术。
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____sprechen Sie?1)Mit wem 2) Mit was 3)Über was 4) Was über A: Mit was 3)Über was 4) Was über B: Mit wem C: Über was 4) Was über D: Was über
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【单选题】3D 打印再制造技术是融合了 ()技术。 A. 3D 打印技术和次制造 B. 3D 打印 C. 工业再制造 D. 3D 打印技术和再制造