题目内容

暗物质主要成分是中微子。()

查看答案

搜索结果不匹配？点我反馈

更多问题

企业进行行业比较和选择的价值标准是(),也称为()。

常见的传递过程有质量传递，动量传递和热量传递。()

听力原文：Customers are much less loyal these days, so companies have to work hard to get repeat sales. And that means having staff who really understand customer care, and identifying what will sell. But of course demand changes. My first job was with an electronics firm that just didn't keep up with technical developments. They assumed there would always be a demand for their goods, and let their competitors get ahead of them. As a result they went out of business.
(21)

罗伯特·E，坎贝尔博士纪念奖学金基金会，为新闻专业的美国少数民族学生而设