当生产处于规模经济的递增阶段时,长期平均成本切于短期平均成本曲线的右端。

题型:判断题

问题:

当生产处于规模经济的递增阶段时,长期平均成本切于短期平均成本曲线的右端。

考点:经济学微观经济学微观经济学题库
题型:判断题

爱美之心远古就有之,下列我国远古人类当中,懂得爱美的人是[ ]

A.北京人

B.山顶洞人

C.元煤人

D.蓝田人

题型:判断题

护患关系中最基本的道德要求是()

A.忠诚美德

B.言语谨慎

C.认真负责

D.严谨作风

E.尊重病人

题型:判断题

以下何药可以预防阿司匹林所致的凝血障碍

A.维生索B6

B.维生素B12

C.维生素K

D.维生素C

E.维生素A

题型:判断题

I once had a house guest from Cuba. During his visit, I happened to throw an old broken blender (搅拌机) in the trash. The next day it was sitting on my counter – in working order. In his world, people simply cannot afford to replace an item which doesn't work properly. They take the time and figure out how to fix it. In Cuba, they are still driving cars from the 1960’s, mainly because they do not have a choice. 

In contrast, the U.S. is a “throw-away society.” Statistics show that each American produces six pounds of trash per day. I believe a combination of factors has contributed to this phenomenon.

“Planned obsolescence(废弃)” is not a secret. It is a manufacturing (制造业) philosophy developed in the 1920’s and 1930’s, when mass production became popular. The goal is to make a product or part that will fail, or become less desirable over time or after a certain amount of use. This pressures the consumer to buy again. 

Planned obsolescence does keep costs down. Instead of making an expensive product that will last a long time, businesses produce more affordable, disposable(一次性的) items. Some electronic items have become so inexpensive that it is cheaper to replace them than to repair them.

Busy people often value their time and convenience more than money. If a car starts to have mechanical problems, replacing it with a newer, more reliable model may be more appealing than tolerating it being in the garage for a week.

In addition, advertising trains consumers to want what is new and improved. It convinces them that the more they have, the happier they will be. 

Unlike people in many developing countries, we live in a world of abundance. A study by Dr. Timothy Jones of the University of Arizona also found that in the U.S., 40-50 percent of all food ready for harvest is wasted. Abundance and waste soon became closely associated in the American way of life.

小题1:In Cuba, people usually fix a broken item instead of buying a new one because __________.

A.wasting is prohibited there

B.they are poor

C.they are interested in fixing things

D.they live a low-carbon life小题2:According to the article, planned obsolescence ___________.

A.began before mass production became popular

B.is intended to encourage consumers to buy more things

C.results in higher prices of items

D.requires factories to produce high-quality products小题3:Which of the following is NOT true about the “throw-away society” in the U.S.?

A.People prefer to buy a new blender rather than repair the broken one.

B.A large quantity of food has been wasted.

C.People believe that the more they have, the happier they will be.

D.People all hold the belief that money comes first.小题4:What may be the writer’s attitude towards a throw-away society?

A.Supportive.

B.Critical.

C.Tolerant.

D.Optimistic.

题型:判断题

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