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【单选题】
当相关系数r→+1时，表明成本与业务量之间的关系是A.
完全正相关
B.
基本正相关
C.
完全相关
D.
完全无关
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反馈参考答案：
举一反三
【单选题】The 'crisis' of education for the whole world, whatever the nations or countries, according to the author, results from ______.
A.
the misconception of the genuine role of education
B.
the lack of a common goal in the education system
C.
the lack of well-knitted social structures
D.
the incompetence of educators and society governors
【简答题】Fill in the blanks accordin g to the information given in Chinese.
【多选题】人们买车通常都会去汽车4S店,请问4S店的4个S指的是( )。
A.
整车销售
B.
汽车维护
C.
售后服务
D.
汽车保险
E.
零配件供应
F.
信息反馈
G.
汽车体验
【单选题】What might be the utmost challenge in the debates for the presidential candidates according to the first paragraph?
A.
How to expose the weaknesses of the rivals.
B.
How to perform. well before a poll is carried out.
C.
How to persuade other people to vote for him with his speeches.
D.
How to respond to the unexpected questions and criticisms of the rivals.
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