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【简答题】
从技术的角度看，电子商务应用系统由企业内部网、企业内部网与因特网的连接、()三部分组成 a 、企业外部网 b 、防火墙 c 、企业 MIS d 、电子商务应用系统
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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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