往复压缩机气缸发出的撞缸的声音，同时伴随机体剧烈振动的原因为（）。A、气缸带液 B、

“阴胜则阳病”的理论基础是（）

A.阴阳的对立制约

B.阴阳的相互依存

C.阴阳的相互促进

D.阴阳的相互转化

E.阴阳的相互为用

As The Economist went to press, Steve Fossett, a famed and fearless aviator who went missing over the Nevada desert on September 3rd, had not been found. But it was not for want of trying. Mr. Fossett has been the subject of one of the most intensive civilian manhunts in history—and also, fittingly, one of the most technological. Besides the usual panoply of search-and-rescue aircraft deployed by America’s Civil Air Patrol, which wound down its search on September 17th, a different sort of search effort is being conducted online, using satellite photographs.
These pictures of the search area are being provided by two firms that supply information to Google Earth: GeoEye and DigitalGlobe. The search itself is being co-ordinated by a corner of the Amazon empire called Mechanical Turk. This is an online job market which farms out tasks that humans are good at, but for which software is poorly equipped, like labeling images and transcribing speech. For the Fossett hunt, volunteers comb through the images and flag any that include what might be a plane or its wreckage.
Among those who keep track of slightly less high-profile missing-person cases, the story will be strikingly familiar. In January Jim Gray, one of Microsoft’s programming gurus, disappeared while sailing near San Fransisco Bay. Mr. Gray was as big a celebrity among computer geeks as Mr. Fossett is among thrill-seekers, and the story played out in the same way. A friend at Amazon, Werner Vogels, got in touch with DigitalGlobe, and the firm provided thousands of images. Within four days, Mechanical Turk was hosting the images and more than 10,000 volunteers were sifting through them—though to no avail, as Mr. Gray was never found.
Mechanical Turk’s director, Peter Cohen, says that now the search protocol has been established, conducting such "distributed" searches is much easier. The limiting factor is the satellite imagery—which obviously has to be up-to-date. At the moment, only three commercial satel-lites provide the kind of resolution that can help in efforts like the Fossett hunt. The firms that own them have governments as their main customers. This makes search-and-rescue imaging a secondary concern.
That looks set to change, though. DigitalGlobe launched its second satellite, WorldView-1, on September 18th, and will launch a third late next year. GeoEye will launch its second next spring. This machine should set a new record for commercial satellite resolution: just 41cm (though that will still not be quite good enough to spot people as well as planes). In total, these launches will double the amount of satellite time that can be dedicated to requests for instant pictures.
Cost, however, is less of a problem. Area such as the Nevada desert and San Francisco Bay are not strategic, so taking photographs of them does not displace paying customers—indeed, DigitalGlobe is not charging for the pictures being used in the Fossett hunt. With the extra capacity provided by the new satellites, the cost will drop even further. And Mr. Cohen is convinced that the internet will always come up with the few thousand volunteers needed to scour the resulting images. Far from being the invasion of privacy it was recently claimed to be, the technology behind Google Earth may in time grow to be a standard search-and-rescue tool.

动作技能的形成通常是以原有的动作联系为基础。所谓动作技能迁移，是指学习新动作过程中，过去掌握的与正在学习的技能之间的相互影响和作用。 根据上述定义，下列各项中不属于动作技能迁移的是：

A.体操运动员掌握了向左侧翻的动作，向右侧翻的动作更容易掌握 

B.外科医生老李常年使用手术刀，锻炼了手的灵活性，退休后学习书法时他发现他的手比别人更灵活，更易于练好书法 

C.对于熟练掌握了一门外语的人来说，学习第二外语时更容易掌握 

D.学习跪马屈体腾越时，先前掌握得比较熟练的屈腿踢越的技能，容易干扰屈体腾越技能的形成

“新仙女木事件”发生前，温度升高是（）。

A、六度

B、四度

C、两度

D、五度

骨折