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简述建模目的及原理。
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举一反三
【单选题】Customers return the product because of（）
A.
Quantity
B.
Quality
C.
Quality control
D.
Quality unqualified
【单选题】_____the quality of the product is good, we will not buy it because of its high price.
A.
As
B.
Once
C.
Although
D.
Lest
【单选题】Which stage of the product life cycle (PLC) is characterized by slow growth because the product has achieved acceptance by most of its potential buyers?
A.
introduction
B.
growth
C.
maturity
D.
decline
【单选题】In PLC , ________ is a period of slowdown in sales growth because the product has achieved acceptance by most potential buyers. At this stage, competition increases as rival firms fight for a bigger s...
A.
Introduction
B.
Growth
C.
Maturity
D.
Decline
【单选题】Because of product differentiation, a monopolistically competitive firm:
A.
possesses some degree of market power.
B.
is very similar to a perfectly competitive firm.
C.
faces a perfectly elastic demand curve.
D.
is unaffected by the elasticity of demand.
【单选题】Which of the following is a marketplace of underground transactions that typically appear because a product is either illegal or tightly regulated?
A.
black market
B.
niche market
C.
two-sided market
D.
vertical market
【单选题】Imposition of a tariff on imports of a product may result in an efficiency loss because:
A.
there arises an excess demand situation in the market.
B.
domestic consumers of the product benefit at the expense of foreign producers.
C.
domestic producers of the product receive a lower price.
D.
some consumers will no longer be able to purchase the commodity.
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