题目内容

From the perspective of market, the market is the sum of (),( )and().

A. Supply and demand
B. People
C. Want
D. Buying power

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Societal marketing concept emphasizes on coordinating the interests of (),()and().

A. Society
B. Enterprise and employee
Consumer
D. Government

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通过代码获取计算器功能按钮的值。

请简要介绍微信小程序flex布局的使用。

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