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【判断题】
流动相和固定是液体的色谱，成为液相色谱。A.
正确
B.
错误
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举一反三
【单选题】As more of a good is consumed, the marginal utility of an additional unit ________, so consumers are willing to pay ________ for an additional unit.
A.
decreases; less
B.
increases; less
C.
decreases; more
D.
increases; more
E.
does not change; less
【简答题】Unit 4 Additional Exercise.docx
【单选题】A profit-maximizing firm that is operating in the short run will sell an additional unit of output as long as:
A.
as doing so reduces the firm's per-unit costs.
B.
doing so reduces the firm's marginal costs.
C.
doing so adds more to revenue than it adds to cost.
D.
there is additional plant capacity with which to produce.
【单选题】The amount of additional satisfaction derived from an additional unit of a good or service is called:
A.
total utility.
B.
marginal cost.
C.
total cost.
D.
marginal utility.
【单选题】________ is the additional cost resulting from producing and selling one additional unit.
A.
Marginal cost
B.
Common cost
C.
Opportunity cost
D.
Target cost
【单选题】The additional cost imposed on society as a whole by an additional unit of pollution is:
A.
the marginal social benefit of pollution.
B.
the marginal social cost of pollution.
C.
the optimal Pigouvian tax.
D.
a technology spillover.
【多选题】导游服务的纽带作用是指把接待服务中的各项服务有机地联系起来,协同地完成旅游接待任务。其具体表现在( )。
A.
承上启下
B.
协调左右
C.
连接内外
D.
服务始终
E.
宣传扩散
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