当用户在（）后，就在该服务器上拥有了自己的邮箱。A、把自己的电脑接到调制器上 B、拨号

下列各项中，不能用来筹集短期资金的筹资方式是( )。

A．应收账款转让

B．留存收益

C．商业票据

D．商业信用

一个两位小数，用四舍五入法凑整到十分位是9.8，它的取值范围是（　　）

A．大于9.75但小于9.84

B．大于或等于9.74但小于9.85

C．大于9.74但小于9.84

D．大于或等于9.75但小于9.85

The differences in living standards around the world are vast In 1993, the average American had an income of about ＄25,000. In the same year, the average Mexican earned $7,000, and the average Nigerian earned. ＄1,500. Not surprisingly, this large variation in average income is reflected in various measures of the quality of life. Changes in living standards over time are also large. In the United States, incomes have historically grown about 2 percent per year (after adjusting for changes in the cost of living). At this rate, average income doubles every 35 years. In some countries, economic growth has been even more rapid. In Japan, for instance, average income has doubled in the past 20 years, and in South Korea it has doubled in the past 10 years.

What explains these large differences in living standards among countries and over time The answer is surprisingly simple. Almost all variation in living standards is attributable to differences in countries’ productivity—hat is, the amount of goods and services produced from each hour of a worker’s time. In nations where workers can produce a large quantity of goods and services per unit of time, most people enjoy a high standard of living; in nations where workers are less productive, most people must endure a more meager existence. Similarly, the growth rate of a nation’s productivity determines the growth rate of its average income.

The fundamental relationship between productivity and living standards is simple, but its implications are far-reaching. If productivity is the primary determinant of living standards, other explanations must be of secondary importance. For example, people might think that labor unions or minimum-wage laws contributed to the rise in living standards of American workers over the past century. Yet the real hero of American workers is their rising productivity.

The relationship between productivity and living standards also has great implications for public policy. When thinking about how any policy will affect living standards, the key question is how it will affect our ability to produce goods and services. To improve living standards, policymakers need to raise productivity by ensuring that workers are well educated, have the tools needed to produce goods and services, and have access to the best available technology.

The passage mainly discusses ().

A. the differences in average income among countries

B. the relationship between productivity and living standards

C. the causes of the rise in living standards

D. the importance of raising productivity

农民金虎因购买农用拖拉机向邻村王某借款5000元，约定还款期为1年。金某的弟弟金豹自愿以自己的一头耕牛为该笔借款提供质押担保，并与王某签订了书面质押合同。请回答下列问题：

根据该质押合同，金豹享有下列哪些权利：

A．要求王某妥善保管耕牛

B．在王某擅自使用耕牛时解除质押合同

C．在金虎向王某还款后要求王某将耕牛交还

D．在王某依法就耕牛行使质权后，可以向金虎行使追偿权

在几个电气连接部分上进行不停电的同一类型的工作，可以使用一张（）。

A、第一种工作票

B、第二种工作票

C、倒闸操作票

D、停送电联系单