定价策略
参考答案：
定价策略（PricingStrategy）指企业以按照市场规律制定价格和变动价格等方式来实现其营销目标。
Instead of calling ___ his uncle, he called ___ my new house with his wife that day.
A．by ,for
B．on, at
C．for, on
D．at, by
挖掘机的液压油温度很快升高是何原因？
