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【多选题】
我国机电产品开发存在的问题:A.
产品仿制多、创新少，市场竞争力不强，获利不高。
B.
设计耗时多，设计成功率低，反复试制使开发周期加长，产品更新换代慢，一般开发周期为国外同类产品的两倍左右。
C.
通用型产品多，面向用户的功能多样化的有竞争优势的产品少。
D.
产品设计从技术上考虑多，产品造型水平低。
E.
设计方法和手段不先进。
F.
产品的标准化、通用化程度不高，生产准备工作量大，产品投产上市速度慢。
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