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【单选题】
增加一个新客户的费用是维系()个老客户的费用,服务顾问及整个售后服务接待的服务质量是非常关键的。A.
10个
B.
5个
C.
3个
D.
1个
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反馈参考答案：
举一反三
【简答题】移支用户的ISDN号中的H0H1H2H3表示( )识别码
【单选题】In order to change some companies' ___ towards hiring women college graduates, the government plans to pass a law. [ ]
A.
views
B.
rules
C.
attitudes
D.
methods
【单选题】— Jim has gone to Britain to see a modern art exhibition. — Oh, really? Do you know when he ?
A.
leaves
B.
will leave
C.
was leaving
D.
left
【单选题】在回归模型Y i =β 0 +β 1 X i +u i 中,检验H 0 :β 1 =0时所用的统计量 服从的分布为( )
A.
χ 2 (n-2)
B.
t(n-1)
C.
χ 2 (n-1)
D.
t(n-2)
【单选题】— Do you know when the technology for hybrid rice to the United States? — Yes. In 1980. [ ]
A.
introduced
B.
introduces
C.
is introducing
D.
was introduced
【单选题】-- I hear Jane has gone to the Holy Island for her holiday ? --- Oh, how nice ! Do you know when she __________ ?
A.
was leaving
B.
had left
C.
has left
D.
left
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