单选题税收负担分配的能力原则，要求纳税人应该按照他们的支付能力纳税

单选题根据汇率制度选择的经济论， 汇率制度的选择主要由如下哪些因素决定？（ ） ①经济开放程度 ②经济规模 ③经济制度 ④进出口贸易的商品结构和地域分布 ⑤国内金融市场的发达程度及其与国际金融市场的一体化程度 ⑥相对的通货膨胀率

单选题某地区对新汽车需求的价格弹性 Ed=-1

单选题For years Internet merchants have poured millions of dollars into new technologies to make their sites easier to use. So why aren't online customers happier? Customer satisfaction levels have remained almost flat through the last several years. The problem, according to Larry Freed, chief executive of a consulting and research firm called ForeSee Results, is not so much that consumers have ignored the many improvements made in recent years. Rather, he said, they still expect more from Internet shopping than it has delivered. "If we walk into a local store, we don't expect that experience to be better than it was a couple years ago," Mr. Freed said. "But we expect sites to be better. The bar goes up every year. " In ForeSee's latest survey, released last month, just five e-commerce sites registered scores higher than 80 out of 100, and no site scored higher than 85. It was much the same story a year ago, when just five scored higher than 80, with no site surpassing 85. "Scores have inched up over time for the best e-commerce companies, but the overall numbers haven't moved drastically," Mr. Freed said. "At the same time though, if you don't do anything you see your scores drop steadily. " That dynamic has been a challenge for online merchants and investors, who a decade ago envisioned Internet stores as relatively inexpensive (and therefore extremely profitable) operations. Now some observers predict a future where online retailers will essentially adopt something like the QVC model, with sales staff pitching the site's merchandise with polished video presentations, produced in a high-tech television studio. QVC.com is evolving in that direction. The Web site, which sold more than $1 billion in merchandise in 2006, has for the last five years let visitors watch a live feed of the network's broadcast. But in recent months, QVC.com has also given visitors the chance to watch archives of entire shows, and in the coming months visitors will be able to find more video segments from recent shows, featuring individual products that remain in stock. Bob Myers, senior vice president of QVC.com, said the Web site's video salesmanship is especially effective when combined with detailed product information, customer reviews and multiple photographs. About eight months ago, for instance, a customer said that she could not determine the size of a handbag from the photographs on the site because she could not tell the height of the model who was holding it. Within two weeks the site tested and introduced a new system, showing the bags with women of three different heights. The results were immediate: women who saw the new photographs bought the bags at least 10 percent more frequently than those who had not. Still, Mr. Myers said, video is a critically important element to sales. "E-commerce started with television commerce," he said. "The sites who engage and entertain customers will be winning here in the near future. " Such a prospect is not necessarily daunting to other e-commerce executives. Gordon Magee, head of Internet marketing for Drs. Foster & Smith, based in a Rhinelander, Wis. , said a transition to video "will be seamless for us. " The company, Mr. Magee said, has in recent weeks discussed putting some of its product on video "so customers could see a 360-degree view they don't have to manipulate themselves. /

单选题关于短期总成本曲线的说法， 正确的是（ ）

单选题对于吉芬商品而言， 当价格下降时， 替代效应和收入效应的关系是（ ）

单选题我国社会保障制度的内容包括（ ） ①社会保险 ②社会救济 ③社会福利 ④社会优抚 ⑤社会捐赠

单选题在社会主义初级阶段的收入分配制度中， 各种生产要素应按（ ） 参与分配

单选题货币供给是（ ）

单选题边际成本曲线与平均可变成本的交点是（ ）

单选题经济政策的基本目标是（ ） ①经济增长 ②物价稳定 ③效率、增长、稳定 ④分配公正 ⑤国际收支平衡 ⑥经济福利

单选题如果 X 和 Y 两种商品需求交叉价格弹性为-1.5， 那么（ ）

单选题以下收入不属于财产性收入

单选题在下列关于商业银行和中央银行本质特征的表述中， 正确的是（ ）

单选题社会主义初级阶段实行以按劳分配为主体， 多种分配方式并存的分配制度， 是为了（ ）

单选题进口配额制在国际贸易政策中属于（ ）

单选题初次分配环节涉及的税种主要是（ ）

单选题货币供应的内生性是指（ ）

单选题股份公司的最高权力机构是

单选题华盛顿共识 秉承了（ ）