多项选择题
Which of the following are cost objects? ( ) 以下哪项是成本对象？ ( ) A. A pint of milk produced by a dairy 牛奶厂生产的牛奶 B. A call taken at a call centre 在呼叫中心的电话 C. One of a bank's business customers 银行的业务客户 D. The home delivery service of a department store百货公司的送货上门服务
Which of the following are cost objects? ( ) 以下哪项是成本对象？ ( ) A. A pint of milk produced by a dairy 牛奶厂生产的牛奶 B. A call taken at a call centre 在呼叫中心的电话 C. One of a bank's business customers 银行的业务客户 D. The home delivery service of a department store百货公司的送货上门服务