银行承兑汇票业务保证金账户用于承兑到期付款，不能（）A、挪用或与承兑申请人结算账户混

改善阶段一般会把分析阶段得出的关键的少数因子区分为控制因子和（）。

最近最经常上演的15部歌剧中没有19世纪德国作曲家理查德•瓦格纳的作品。虽然音乐制作人都希望制作听众想听的作品，但瓦格纳的作品没有被相对频繁地演出并不能表明他的作品不受欢迎，而是因为他的歌剧的舞台演出费用极其昂贵。
下面哪项，如果正确，最能支持上面的结论

A．经常上演的歌剧中不包括小型业余作曲群体的作品。

B．演出公司经常得到一些为了能看豪华气派的歌剧而赞助的人的支持。

C．所有最近经常上演的歌剧至少是已流行了75年的作品。

D．近期瓦格纳的作品录音带出得比别人都多。

选择法测时是指间隔选择施工过程中非紧连接的组成部分(工序或操作)测定工时，精确度达( )s。

A．1.5

B．2.5

C．1

D．0.5

TEXT B
One thing that distinguishes the online world from the real one is that it is very easy to find things. To find a copy of The Economist in print, one has to go to a news-stand, which may or may not carry it. Finding it online, though, is a different proposition. Just go to Google, type in "economist" and you will be instantly directed to economist.com. Though it is difficult to remember now, this was not always the case. Indeed, until Google, now the world’s most popular search engine, came on to the scene in September 1998, it was not the case at all. As in the physical world, searching online was a hit-or-miss affair.
Google was vastly better than anything that had come before: so much better, in fact, that it changed the way many people use the web. Almost overnight, it made the web far more useful, particularly for non- specialist users, many of whom now regard Google as the internet’ s front door. The recent fuss over Google’s stock market flotation obscures its far wider social significance: few technologies, after all, are so influential that their names become used as verbs.
Google began in 1998 as an academic research project by Sergey Brin and Lawrence Page, who were then graduate students at Stanford University in Palo Alto, California. It was not the first search engine, of course. Existing search engines were able to scan or "crawl" a large portion of the web, build an index, and then find pages that matched particular words. But they were less good at presenting those pages, which might number in the hundreds of thousands, in a useful way.
Mr Brin’s and Mr Page’s accomplishment was to devise a way to sort the results by determining which pages were likely to be most relevant. They did so using a mathematical recipe, or algorithm, called PageRank. This algorithm is at the heart of Google’s success, distinguishing it from all previous search engines and accounting for its apparently magical ability to find the most useful web pages.
Untangllng the web
PageRank works by analysing the structure of the web itself. Each of its billions of pages can link to other pages, and can also, in turn, be linked to. Mr Brin and Mr Page reasoned that if a page was linked to many other pages, it was likely to be important. Furthermore, if the pages that linked to a page were important, then that page was even more likely to be important. There is, of course, an inherent circularity to this formula--the importance of one page depends on the importance of pages that link to it, the importance of wb4ch depends in turn on the importance of pages that link to them. But using some mathematical tricks, this circularity can be resolved, and each page can be given a score that reflects its importance.
The simplest way to calculate the score for each page is to perform a repeating or "iterative" calculation (see article). To start with, all pages are given the same score. Then each link from one page to another is counted as a "vote" for the destination page. Each page’s score is recalculated by adding up the contribution from each incoming link, which is simply the score of the linking page divided by the number of outgoing links on that page. (Each page’s score is thus shared out among the pages it links to.)
Once all the scores have been recalculated, the process is repeated using the new scores, until the scores settle down and stop changing (in mathematical jargon, the calculation "converges"). The final scores can then be used to rank search results: pages that match a particular set of search terms are displayed in order of descending score, so that the page deemed most important appears at the top of the list.

Which of the following is NOT true

A．Each page can be given a score that reflects its importance.

B．In the beginning of rating a page’s relative importance, all pages are given the same score.

C．The importance of one page depends on the importance of pages that link to it, the importance of which depends in turn on the importance of pages that link to them.

D．One page’s score is given totally to another page it links to.

应力腐蚀发生的条件没有（）？

A、恒定的拉应力

B、腐蚀介质的存在

C、铝合金

D、纯铝