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【单选题】
An economic system is a?A.
Relationship between different groups or are enduring and relatively stable patterns of relationship emphasizing the idea that society is grouped into structurally related groups or sets of roles with different functions, meanings, or purposes.
B.
The way in which the products that meet the material needs of the people are produced, distributed, and consumed.
C.
A complete set of institutions, interest groups (such as political parties, trade unions, lobby groups) the relationships between those institutions are the political norms and the rules that govern their functions.
D.
Theoretically regarded as a way of the government makes a policy and also to make them more organized in their administration.
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反馈参考答案：
举一反三
【多选题】学校要建一个校园,现要将行政楼与教学楼的两个结构不同的局域网连起来,适合用于连接两栋楼的网络设备可选择哪几种设备?( )
A.
集线器
B.
二层交换机
C.
三层交换机
D.
路由器
【简答题】电声教材所传递的声音信息包括（）、（）和（）三个方面。
【简答题】电声教材所传递的声音信息包括______、______和______三个方面。
参考解析：
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