单项选择题
（） is meant to provide facility for customer’s need or inquiry and arrange it.
A.Service B.business C.customer service D.making money
单项选择题 Saving or reducing expenditure in business is （）
单项选择题 （）is guaranteed by the full market supply and Just in time ( JIT ) .
单项选择题 （）is more accurate and easier than Fixed Interval System ( FIS ) in the order method.
