皮皮学，免费搜题
登录
搜题
【单选题】
当总效用增加时,边际效用应该A.
为正值，且不断减少
B.
为正值，且不断增加
C.
为负值，且不断增加
D.
为负值，且不断减少
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】A characteristic of the information age is that ______.
A.
the service industry is relying more and more on the female work force
B.
manufacturing industries are steadily increasing
C.
people find it harder and harder to earn a living by working in factories
D.
most of the job opportunities can now be found in the service industry
【单选题】The service industry is also called _______.
A.
subsidiary industry
B.
light industry
C.
tertiary industry
D.
secondary industry
【单选题】The service industry is also called .
A.
subsidiary industry
B.
light industry
C.
secondary industry
D.
tertiary industry
【简答题】A sense of ______ is the basic requirement for peopl e working in the service industry, such as education and health care. [ ] A . agreement B. attention C. carefulness D. devotion
相关题目：
参考解析：
知识点：
题目纠错 0
发布
