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半夏和天南星的功效的共同点包括
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Customer profitability analysis is best conducted with the tools of an accounting technique called activity-based costing.
Customer lifetime value describes the net present value of the stream of future profits expected over the customer's lifetime purchases.
For a magazine, subscription renewal rate is a good measure of retention.
A company should try to retain a customer only as long as the cost to discourage defection is lower than the lost profit.
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