已知消费者的收入为50元，Px=5元，Py=4元，假设该消费者计划购买6单位X 和 5单位Y，商品X和Y的边际效用分别为60和30，如要实现效用最大化，他应该
A. 增购X而减少Y的购买量
B. 增购Y而减少X的购买量
C. 同时增加X和Y的购买量
D. 同时减少X和Y的购买量
查看答案
记账凭证和原始凭证的共同点是（）。
A. 填制的人员相同
B. 填制的时间相同
C. 经济业务内容相同
D. 作用相同
Which of the following is the most accurate description of a value network?
A. a system of partnerships and alliances that a firm creates to source, augment, and deliver its offerings
B. a system of organizations and resources involved in moving a product from supplier to customer
C. an arrangement whereby an organization transforms inputs into finished goods
D. a network that allows an organization take the finished products to the end-users
E. a communication network that allows an organization to transfer information to end-customers
Companies should first think about the target market and then design the supply chain backward from that point. This strategy is called ________ planning.
A. demand chain
B. resource
C. external channel
D. materials
E. strategic business
Producers often shift some functions to intermediaries. Which of the following is the most significant benefit of doing this?
A. It increases customer loyalty.
B. It provides the producer with greater control over operations.
C. It reduces the amount of direct customer interaction.
D. It lowers the producer's costs and prices.
E. It ensures greater information security.
微信支付 
支付宝支付