( )品牌就是指一个企业的各种产品分别采用不同的品牌。

( )品牌就是指一个企业的各种产品分别采用不同的品牌。A.个别  B. 制造商 C.中间商  D.统一

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用最小平方法配合直线趋势,如果y=a+bx中b为负值,则这条直线呈A、下降趋势B、上升趋势C、不升不

用最小平方法配合直线趋势,如果y=a+bx中b为负值,则这条直线呈A、下降趋势B、上升趋势C、不升不降D、无法确定

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It suddenly occurred to us that he had found out h

It suddenly occurred to us that he had found out how we had made his room in a m

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Beer is the most popular drink among male drinkers

Beer is the most popular drink among male drinkers whose overall consumption is

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如果两个变量数列的标准差相等,则它们的平均数的代表性也一定相同。A、正确B、错误

如果两个变量数列的标准差相等,则它们的平均数的代表性也一定相同。A、正确B、错误

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