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【单选题】
下列说法中哪个是正确的()A.
网络中的计算机资源主要指服务器、路由器、通信线路与用户计算机
B.
网络中的计算机资源主要指计算机操作系统、数据库与应用软件
C.
网络中的计算机资源主要指计算机硬件、软件、数据
D.
网络中的计算机资源主要指Web服务器、数据库服务器与文件服务器
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反馈参考答案：
举一反三
【单选题】The difference between production possibilities frontiers that are bowed out and those that are linear is that
A.
bowed out production possibilities frontiers illustrate tradeoffs where linear production possibilities frontiers do not.
B.
bowed out production possibilities frontiers show increasing opportunity cost where linear ones show constant opportunity cost.
C.
bowed out production possibilities frontiers are the result of perfectly shiftable resources where linear production possibilities frontiers are not.
D.
linear production possibilities frontiers illustrate real world conditions more than bowed out production possibilities frontiers.
【判断题】The production possibilities frontier is bowed outward because the trade-offs between the production of any two goods are constant.
A.
正确
B.
错误
【单选题】The concavity (bowed-out shape) of the production possibilities curve is the result of:
A.
the law of demand.
B.
the law of supply.
C.
the law of increasing opportunity cost.
D.
complementarily in consumption.
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