所谓客户满意度，是可感知效果与期望值之间的变异函数。()
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企业在会计确认、计量和报告中应当以收付实现制为基础。()
有关库存现金、银行存款收支业务的凭证，如果填写错误。应把凭证上的错误用红笔删掉，将正确内容写在其上方。()
假设企业客户流失率为20%，那么客户群体的生命周期为5年(1/20%)。()
By writing Paragraph 1, the author intends to______.
A. advocate that pet animals do as well have traits
B. prove that little attention has been paid to the personalities of animals
C. introduce a study focusing on birds" behaviors
D. state that people differ from animals because of personalities
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