假设需要为表 customer 添加主键约束,主键列为 customer_id，可以使用如下（ ）方式。 A: Alter table CUSTOMER ADD pk_customer primary key (customer_id); B: Altertable CUSTOMER ADD constraint pk_customer primary key (customer_id); C: Alter table CUSTOMER ADD constraint pk_customer (customer_id); D: Alter table CUSTOMER ADD primary key (customer_id);

B2C是英文（ ）的缩写。 A: Business to Customer B: Business 2 Customer C: Customer to Customer D: Customer 2 Customer

C2C Customer to Customer

In Maketing, customer needs are similar to customer wants, but different from customer demands.

【单选题】Which of the following is NOT a recognized definition of customer service? A. Customer service as an activity B. Customer service as a theory C. Customer service as performance measures D. Customer service as a philosophy

S: Would you show me your ID card, please? C: _______________. （S: staff，C: customer） A: Here you are. B: Here are you. C: Here we are. D: Here are we.

The costs of _______ are much lower than the costs of recruiting new customers. A: customer satisfaction B: customer loyalty C: customer value D: customer retention

______ as you are, we can’t offer you more discount. A: A frequent customer B: Frequent customer C: Frequently customer D: A frequently customer

What is correct about the impact of customer engagement on the service system？ A: The higher the customer engagement is, the less the customer's influence on the service is. B: The higher the customer engagement is, the more controllable the service system is. C: The higher the customer engagement is, the lower the service efficiency is. D: The higher the customer engagement is, the higher the customer satisfaction is.

There is a close connection between customer satisfaction and customer loyalty.