第40题: [单项选择]What function of the wholesaler is compared to a valve A. Controlling the flow of goods. B. Pushing up demand from retailers, C. Beating part of the risk for manufacturers. D. Selling goods to retailers. 参考答案:A 答案解析:[分析] 推断题型。
从第三段的第一句话The manufacturer can then keep up a steady production flow, and the retailer