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(2011年真题)甲欲出售一辆汽车,乙向甲声称受丙委托购买该车,甲托人向丙核实,丙未予否认。甲遂将该车交给乙,乙将车开走后不知去向,甲向丙要求付款遭拒绝。此案的正确处理方法是( )。

A. 由甲自行承担损失
B. 由乙支付车款
C. 由丙支付车款
D. 由乙、丙承担连带付款责任

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直肠

A. 有骶曲和会阴曲
B. 下部膨大称为直肠壶腹
C. 上端在第3骶椎平面接乙状结肠
D. 中间的直肠横襞最大,距肛门7cm

The Old Gate In the Middle Ages the vast majority of European cities bad walls around them. This was partly for defensive 1 but another factor was the need to keep out anyone regarded as undesirable, like people with contagious 2 . The Old City of London gates were all 3 by the end of the 18th century. The last of London’s gates was removed a century ago, but by a 4 of luck, it was never destroyed. This gate is, in 5 fact, not called a gate at all; its name is Temple Bar, and it marked the 6 between the Old City of London and Westminster. In 1878 the Council of London took the Bar down, numbered the stones and put the gate in 7 because its design was 8 it was expensive to 9 and it was blocking the traffic. The Temple Bar Trust was 10 in the 1970’s with the intention of returning the gate home. The aim of the trust is the 11 of the nation’s architectural heritage. Transporting the gate will mean physically pulling it 12 , stone by stone, removing and rebuilding it near St Paul’s Cathedral. Most of the facade of the gate will probably be 13 , though there is a good 14 that the basic structure will be sound. The hardest 15 of all, however, will be to recreate the statues of the monarchs that once stood on top of the gate.

A. requirement
B. job
C. necessity
D. obligation

Pool Watch Swimmers can drown in busy swimming pools when lifeguards fail to notice that they are in trouble. The Royal Society for the Prevention of Accidents says that on average 15 people drown in British pools each year, hut many more suffer major injury after getting into difficulties. Now a French company has developed an artificial intelligence system called Poseidon that sounds the alarm when it sees someone in danger of drowning. When a swimmer sinks towards the bottom of the pool, the new system sends an alarm signal to a poolside monitoring station and a lifeguard’s pager. In trials at a pool in Ancenis, near Nantes, it saved a life within just a few months, says Alistair McQuade, a spokesman for its maker, Poseidon Technologies. Poseidon keeps watch through a network of underwater and overheard video cameras. AI software analyses the images to work out swimmers trajectories. To do this reliably, it has to tell the difference between a swimmer and the shadow of someone being cast onto the bottom or side of the pool. "The underwater environment is a very dynamic one, with many shadows and reflections dancing around." says McQuade. The software does this by "projecting" a shape in its field of view onto an image of the far wail of the pool. It does the same with an image from another camera viewing the shape from a different angle. If the two projections are in the same position, the shape is identified as a shadow and is ignored. But if they are different, the shape is a swimmer and so the system follows its trajectory. To pick out potential drowning victims, anyone in the water who starts to descend slowly is added to the software’s "pre-alert" list, says McQuade. Swimmers who then stay immobile on the pool bottom for 5 seconds or more are considered in danger of drowning. Poseidon double-checks that the image really is of a swimmer, not a shadow, by seeing whether it obscures the pool’s floor texture when viewed from overhead. If so, it alerts the lifeguard, showing the swimmer’s location on a poolside screen. The first full-scale Poseidon system will be officially opened next week at a pool in High Wycombe, Buckinghamshire. One man who is impressed with the idea is Travor Baylis, inventor of the clockwork radio. Baylis runs a company that installs swimming pools, and he was once an underwater escapologist with a circus. "I say full marks to them if this works and can save lives," he says. But he adds that any local authority spending £30,000-plus on a Poseidon system ought to be investing similar amounts in teaching children to swim. Which of the following statements about Trevor Baylis is NOT true

A. He runs.
B. He invented the clockwork radio.
C. He was once an entertainer.
D. He runs a company.

[2002年]以下是关于我同水资源及其开发利用的材料:材料1中国可利用的水资源仅占世界界的7%,全国年人均淡水量为2400立方米,仪为世界人均占有量的1/4,而且长江以南的水资源占全国的80%,长江以北占20%,其人均点有量是世界人均占有量的1/20。1999年全国年污水排放总量为606亿立方米,其80%未经处理直接排入江河湖库。缺水的北方农业采用传统的漫灌方法,浪费现象十分严重。1998年中国长江等流域发生特大洪灾,表面上是水多了,实质上是森林过度采伐。生态环境严重化,蓄水保水作用减弱所致。摘自《光明日报》,2001年5月21日 材料2当人类改造自然能力显著提高,有能力迅速将自然环境和物质转化为经济效益之后,就往往偏爱于眼前利益,忽略了所取得效益的由来和根本,演变为国家、地区、部门、集团对资源的竞相占有,甚至导致总体失控,进而遭到自然界的报复。滥垦滥伐导致水土流失;同垦河湖滩地导致洪水泛滥;不注意珍惜和合理配置、节约、保护水资源导致干旱缺水;超采地下水导致地面下沉等,都是明显的例证。摘自水利部部长汪恕诚在全国水利科技工作会议上的讲话 材料3 20世纪90年代以来,水资源危机口益凸出。把海水转化为淡水的海水淡化工程日益获得广泛应用,反渗透技术已相当成熟.并有约20年的经验积累,已成为海水制取饮用水最廉价的方法。目前世界淡化水日产量已达到2700万立方米,并以10%一30%的年增长率攀升。实施此项工程的不仅有中东国家,还有美国、俄罗斯、日本、意大利等许多发达国家的部分地区。其巾美国有一家反渗透淡化厂规模就达到日产38万吨。大型海水淡化吨成本一般在1美元左右或以下,在许多国家其价格与自来水价格相差无几或接近持平。相比之下,我国海水淡化事业进展缓慢,在整个40年的发展过程中每跨一步都要10年之久。1958年起步,1965年开始研究反渗透技术,1986年建设日产3000吨的海水淡化装置,1997年建战舟山日产5000吨海水反渗透化装置,与国际水平相差甚远。造成我困海水淡化进展缓慢的根本原因是思想不够解放,担心海水淡化技术不可靠,成本过高等等。摘自《中国化工报》,2001年3月10日 材料4甘肃省张掖历史上并不缺水,历史上黑河充沛的水壤,曾经浇筑了河两走廊的辉煌,而张掖就位于河两走廊的腹地,人称“金张掖”。但是随着人口和耕地的增长,近几十年来,水的矛盾越来越突出了。为了缓解水事矛盾,100多万张掖农民在调整农业结构的时候,把水的压力变为动力,以节水为出发点,选择节水而高效的种植业品种,不仅提高了农民收入,实现节水与增收双赢,而且转变了农业牛产方式,使农业发展水平跃卜了一个新的台阶,并最终走向可持续发展的良性循环。摘自《人民日报》,2001年5月22日请回答:(1)结合材料1和2,运用马克思主义关于人类社会与自然的关系原理,分析我国水资源问题的产生原因。(2)根据材料3,分析人们在解决水资源的过程中所体现的唯物辩证法矛盾的转化原理。(3)结合材料4,分析人类在应对水资源挑战的实践活动巾主观目的和客观规律之间的关系。

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