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【多选题】
国外高速铁路运营调度指挥系统的特点包括A.
自动化
B.
集中化
C.
集成化
D.
综合化
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反馈参考答案：
举一反三
【简答题】Cartels
【单选题】Cartels are:
A.
difficult to organize.
B.
difficult to preserve.
C.
especially unlikely to succeed if the members sell many varied products.
D.
all of the above.
【简答题】呼吸与呼吸暂停交替出现称为___呼吸。
【单选题】Cartels are difficult to maintain because:
A.
there are generally few barriers to entry in oligopoly markets.
B.
firms have a strong private incentive to cheat on agreements.
C.
it is difficult to enforce a cartel agreement.
D.
both (b) and (c).
【简答题】Cartels
【单选题】Industry cartels never:
A.
give rise to price supports.
B.
spur entry when barriers to entry are low.
C.
spur exit when exit barriers are low.
D.
prompt inefficiency and waste.
【单选题】OPECs announcement about the cartels promise to add more barrels to production______
A.
is not only good news for OPEC, but good news for the New York Mercantile Exchange as well
B.
has been dismissed by the Market
C.
is the main reason the OPEC ministers took jets back home
D.
proves that OPEC has lost its power to control the Market
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