问题 单项选择题 B型题

危害分析关键控制点的缩写为()

A.AW

B.CFU

C.MPN

D.HACCP

E.GMP

答案

参考答案:D

解析:1.GMP是良好生产规范(good manufacturing practice)的缩写,它是为保证食品安全、食品质量而制定的贯彻食品生产全过程的一系列方法、监控措施和技术要求。目前,世界上许多国家都在逐步制定和完善GMP的管理制度,并将GMP应用于各种食品的质量控制与管理,我国于1998年由卫生部发布了《膨化食品良好生产规范》和《保健食品良好生产规范》,这是我国首次颁布的GMP管理制度。 2.HACCP是危害分析与关键控制点(hazard analysis and critical control point)的英文缩写,是食品行业(含为食品行业提供原料或包装的行业)用于控制食品安全危害的一个管理体系要求。 3.AW是食品中水分多少的表示方法,最常用的是总水分,即105℃干燥减重法测出的量,也就是食品在105℃干燥至恒重所减少的重量。这当然不完全是水,凡在105℃下可以蒸散的低沸点物质都包括在内,所以明确地说叫干燥失重,但目前我国计算上和化学分析上还是叫它总水分。常用的指标还有食品活性水分的测定,即可以自由蒸散的水分,这种水分的多少叫水分活性(wa-ter activity),以AW表示。AW在食品防腐保藏、脱水复水上都有重要意义。

判断题
单项选择题

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 fiat 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, be 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.

The example of a customer buying a handbag is used to show that()

A. visual confirmation and product specifications help improve online sales

B. online shopping has its own advantages as well as disadvantages

C. women are more attracted to photographs of products than men buyers

D. photographs often help to increase immediate sales by at least 10 percent