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【多选题】
企业采用五种竞争力量分析模型分析外部竞争环境，当出现( )情况时，企业面临的行业内部竞争威胁较大。A.
行业增长缓慢
B.
行业内企业具有产品差异性
C.
参与竞争的公司数量少
D.
参与竞争的公司规模和影响力相当
E.
替代品出现
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【单选题】关于建筑面积、使用面积、辅助面积、结构面积、有效面积的相互关系，正确的表达式有（ ）。
A.
有效面积=建筑面积－结构面积
B.
使用面积=有效面积+结构面积
C.
建筑面积=使用面积+辅助面积
D.
辅助面积=使用面积－结构面积
【单选题】According to the professor, how do geologists interpret the presence of erratics in the tropics?
A.
It indicates that carbon-dioxide levels were once higher there.
B.
It is evidence of global glaciation.
C.
It indicates that the Earth may cool off at some point in the future.
D.
It is evidence that some glaciers originated there.
【单选题】According to the passage______.
A.
managers need a degree and the ability to communicate
B.
training need to be done in groups to be successful
C.
managers today must have good communication and leadership skills
D.
industrial managers do not need to write letters.
【单选题】According to the passage, why was the Labour Party established in Britain?
A.
Because the trade unions did not do much good for the working people.
B.
Because the Liberal Party were not strong enough to defeat the Conservative Party.
C.
Because the working people would not like to be members outside the Liberal Party.
D.
Because neither of the two major parties was the parties for the working people.
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