在项目可行性研究中，对交通项目的市场分析一般应包含社会发展对( )的要求。 A．服 发布时间：2017-07-04 07:16 │ 来源：www.tikuol.com 题型：多项选择题 问题： 在项目可行性研究中，对交通项目的市场分析一般应包含社会发展对( )的要求。A．服务质量B．运输方式C．交通运输量D．节约时间E．人文条件
题型：多项选择题 据报道，用于清洗龙虾的“洗虾粉”中含有柠檬酸钠、亚硫酸钠（Na2SO3）等物质，可能对人体的健康产生危害。亚硫酸钠中钠原子与氧原子的个数比为________；氧元素与硫元素的质量比为________。 查看答案
题型：多项选择题 在下面这段文字的横线上填上恰当的句子，要求符合上下文特定的语意。 白春礼院士对“青年”的英文大写YOUTH进行了巧妙的解释：Y像小树，意味着青少年正处于发育发展期，需要不断茁壮成长；O________________；U__________________；T像一个戴帽子直立行走的人，很多青年都获得了学士帽、硕士帽、博士帽，但学位的获得只是一个开端，我们不能被荣誉压弯了腰，还要直立行走；H像一个单杠，希望青年在工作之余，保持良好的体魄，更好地为国家民族作贡献。O_________________________________________________U_________________________________________________ 查看答案
题型：多项选择题 有关斯塔克尔伯格模型基本假设错误的是（）.A.产品同质：两企业面临相同的需求曲线B.两个企业存在生产能力限制且是线性的C.决策变量为产量D.两个企业的边际成本相等且保持不变，没有固定成本 查看答案
题型：多项选择题 Marginal benefit is most accurately described as the:（）A. benefit from producing one more unit of a good or service.B. benefit an individual gets from consuming an additional unit of a good or service.C. benefit that must be forgone in order to consume an additional unit of a good or service. 查看答案
题型：多项选择题 Ever since it was claimed that a medicine made from the Chinese three-striped box turtle could cure cancer, demand for the product has increased, making the turtle the most expensive to be found in China’s food markets. Huge sums of money have been made selling the medicine. The turtle -- along with a few other Cuora species -- was once imported into China by the pet trade. Exporters obtained the specimens in the food markets rather than going out to collect them in the wild. Treatment of the turtles prior to reaching the markets resulted in many of them being diseased. Packed tightly into crates, often for journeys of several weeks without food, it is little wonder that many specimens exported to western countries fared poorly when purchased as pets. Throughout the Far East turtles and tortoises have featured in various cultures and certain religions. They have also been used for hundreds of years for food and medicine. Traditional Chinese medicine is probably the greatest threat to the three-striped box and to the thousands of other turtles that are imported yearly into China. Turtles are well known for their longevity, which it is thought will be passed on to those eating them. Turtle blood, bones and shells -- particularly the plastron (ventral part of the shell) -- are thought to have medicinal properties and be able to cure a number of ailments. Turtle eggs are also used for food and medicine. The medicinal value of the turtles is open to question, and it is possible that herbs could produce the same effects. Any beneficial substances from the turtles could also be synthesized chemically, so as to prevent the killing of turtles. The southern part of China has become more prosperous in recent years, and the demand for turtles has increased dramatically. Turtle dishes are served in restaurants and regarded as an expensive delicacy, even a status symbol. As turtle supplies in China dwindled, traders started importing the animals from Vietnam. As a result, many Vietnamese turtles have now disappeared from their haunts in the wild. To satisfy growing demand, importers have now turned to sources farther afield, including Cambodia, Laos, Nepal, India, Bhutan and Indonesia. Since biologists started studying turtles in Chinese food markets, several previously unknown and extremely rare species have been found; some are on Appendix I of CITES. At the present rate of collection such specimens, and even species not yet discovered, could soon be extinct. The three-striped box turtle is simply one among dozens of other species flooding into China, but its high value makes it a special target for collectors.This passage is most probably taken from ______.A．an academic paperB．a newspaper reportC．a textbook about magnetsD．a science fiction 查看答案