单项选择题
顾客关系管理的实质的理论提出:()
A.1997,(美),Gartner Group
B.1966,(美),Gartner Group
C.1977,(美),Gartner Group
D.1997,(英),Gartner Group
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单项选择题
A.1997,(美),Gartner Group
B.1966,(美),Gartner Group
C.1977,(美),Gartner Group
D.1997,(英),Gartner Group
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