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【多选题】
下列属于研究活动的是()。A.
意于获取知识而进行的活动
B.
研究成果或其他知识的应用研究、评价和最终选择
C.
材料、设备、产品、工序、系统或服务替代品的研究
D.
新的或经改进的材料、设备、产品、工序、系统或服务的可能替代品的配制、设计、评价和最终选择
拍照语音搜题，微信中搜索"皮皮学"使用
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【简答题】The Confusing Pursuit of Happiness When a woman asks a man how she looks, it is very d_________ for him to come up with the right answer. Men do not think of their looks in the same way as women do. T...
【简答题】润滑油的作用有哪些？
【简答题】How do men and women think of their own appearance?
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