国际上,结算机构通常采用分级结算制度,即只有结算机构的会员才能直接得到结算机构提供的结算服务,非结算会员只能由结算会员提供结算服务。( )
某企业2008年销售收入20亿元人民币,销售净利率为12%,2008年年初所有者权益为40亿元人民币,2008年年末所有者权益为55亿元人民币,则该企业2008年净资产收益率为( )。
关于药物吸收说法,正确的是( )
胃是被动吸收药物的主要吸收部位
核黄素在十二指肠主动吸收,与促胃肠动力药同服时,其吸收会增加
生物药剂学分类系统Ⅱ类药物具有低溶解性特点,可通过增加药物脂溶性改善吸收
一般认为口服剂型的生物利用度顺序为:混悬液>胶囊>包衣片>分散片
难溶性酸性药物制成钠盐后可改善溶解度,其口服吸收会增加
女 ,30岁,初产妇,妊娠36周,规律性腹痛伴阴道多量出血2小时,B超示中央性前置胎盘,胎儿双顶径8 .9cm,胎心率130次/分,目前最适宜的处理措施是
下列关于大宗商品投资的类型表述中,正确的有( )。
Ⅰ.能源类大宗商品受到国际能源价格以及世界经济形势和国家宏观经济政策的影响
Ⅱ.基础类材料大宗商品通常以小批量进行交易
Ⅲ.黄金是贵金属类大宗商品的典型代表
Ⅳ.大豆、玉米、稻谷的期货被称为三大农产品期货
Passage1
In many of the developing countries in Africaand Asia, the population is growing fast. The reason for this is simple: Womenin these countries have a high birth rate - from 3.0 to 7.0 children per woman.The majority of these women are poor, without the food or resources to care fortheir families. Why do they have so many children? Why don't they limit thesize of their families? The answer may be that they often have no choice. Thereare several reasons for this.
Onereason is economi
In atraditional agricultural economy, large families are helpful. Having morechildren means having more workers in the fields and someone to take care ofthe parents in old age. In an industrial economy, the situation is different.Many children, do not help a family; instead, they are an expense. Thus,industrialization has generally brought down the birth rate. This was the casein Italy, which was industrialized quite recently and rapidly. In the earlypart of the twentieth century, Italy was a poor, largely agricultural countrywith a high birth rate. After World WarⅡ, Italy's economy was rapidly modernized and industrialize
By theend of the century, the birth rate had dropped to 1. 3 children per woman, theworld's lowest.
However,the economy is not the only important factor that influences birth rate. SaudiArabia, for example, does not have an agriculture-based economy, and it has oneof the highest per capita incomes in the worl
Nevertheless,it also has a very high birth rate. Mexico and Indonesia, on the other hand,are poor countries, with largely agricultural economies, but they have recentlyreduced their population growth.
Clearly,other factors are involve
Themost important of these is the condition of women. A high birth rate almostalways goes together with lack of education and low status for women. Thiswould explain the high birth rate of Saudi Arabia. There, the traditionalculture gives women little education or independence and few possibilitiesoutside the home. On the other hand, the improved condition of women in Mexico,Thailand, and Indonesia explains the decline in birth rates in these countries.Their governments have taken measures to provide more education andopportunities for women.
Anotherkey factor in the birth rate is birth control. Women may want to limit theirfamilies but have no way to do so. In countries where governments have madebirth control easily available and inexpensive, birth rates have gone down.This is the case in Singapore, Sri Lanka, and India, as well as in Indonesia,Thailand, Mexico, and Brazil. In these countries, women have also been providedwith health care and help in planning their families.
Thesetrends show that an effective program to reduce population growth does not haveto depend on better economic conditions.3 It can be effective if it aims tohelp women and meet their needs. Only then, in fact, does it have any realchance of success. (495 words)
In Mexico, Thailand, and Indonesia, the government _______.