项目投资的控制周期应视项目的规模和特点而定,一般的项目控制周期为( )。A.1个月

题型:单项选择题

问题:

项目投资的控制周期应视项目的规模和特点而定,一般的项目控制周期为( )。

A.1个月

B.2个月

C.3个月

D.6个月

考点:一级建造师建设工程项目管理建设工程项目管理
题型:单项选择题

把一个平角16等份,则每份为(用度,分,秒表示)______.

题型:单项选择题

如图为甲、乙两种固体物质在水中的溶解度曲线.下列说法错误的是(  )

A.在t1℃时,乙物质饱和溶液的溶质质量分数是25%

B.在t1℃时,甲、乙两物质的溶解度相等

C.在t2℃时,N点表示甲物质的不饱和溶液

D.甲物质的溶解度随温度的升高而增大

题型:单项选择题

在一个电场中,把电量为2.0×10-9C的带正电的检验电荷,从A点移到B点,电场力做正功1.8×10-7J.

求(1)AB两点的电势差UAB

(2)取A点处电势为零,求B点电势及检验电荷在B点的电势能.

题型:单项选择题

At first glance, Microsoft’s new search engine, Bing, doesn’t look all that different from Google. There’s a search bar across the top; a list of results down the middle of the page, flanked above and to the right by ads; and a smattering of categories to the left that will refine the listings. (41) ______.

Microsoft describes the change as a focus on being a "decision engine" vs. a search engine. Jon Tinter, general manager of strategic partnerships in Microsoft’s online audience business group, said the idea is to shift work from consumers to search engines, by answering more queries on the search results page, without having to click through to a result.

(42) ______. Want to know if a flight’s on time Search the airline and flight number, and it’ll answer that query atop the search results rather than pull up a list of sites and links that can tell you. Want to know where the UPS package you sent is The search results pull up a field for you to enter a tracking number, rather than making you click through to UPS. com to do that.

"Task and decision sessions are the focus of the new engine," said Mr. Tinter, as opposed to more simple navigational searches.

The company is focusing on specific improvements in the areas of travel, shopping and products, local and health—all highly commercial areas. It has fully integrated into the search engine Farecast, a recently acquired travel search engine that "predicts" the likelihood of flight prices going up or down. (43) ______.

The idea behind the changes is to get people to think differently about search, Mr. Tinter said.

"Search is a habit. When you talk to people you hear a lot of stated satisfaction, but they don’t behave like satisfied customers—and we think that’s where the opportunity is," he said, citing statistics: (44) ______.

But whether the changes look different enough to make consumers switch isn’t clear. Perhaps that’s why Microsoft is helping the service, which will be full deployed on June 3, with an $ 80 million to $100 million campaign from JWT (智威汤逊广告公司).

(45) ______.

Finding words like that these days "is getting harder and harder," said Paola Norambuena, senior director-head of verbal identity at Interbrand. She added that linguistically Bing had a lot of applications. "It’s the sound of found. "

[A] Branding shop Interbrand helped conceive the name Bing, which was chosen because it was memorable, easy to spell around the world and could be used as a verb, as Microsoft hopes to convert people from "Google it" to "Bing it. "

[B] But for certain types of queries, the site trumps its competitors—specifically market leader Google.

[C] Microsoft says that if its search engine brings more relevant results than Google or Yahoo!, then people will eventually migrate to the "best" product. That may not be true. Google has become a habit for more than two-thirds Of the people who use search engines in the U. S.

[D] For example, search for "weather," and Bing will use your IP address to figure out your location and display a forecast at the top of the results.

[E] Two-thirds of people say they’re satisfied with search, but 15% of the time, search queries go abandoned without answer. "I can’t think of another industry where you’d have 15% abandonment and two-thirds of customers saying they’re satisfied. "

[F] Creating a new search engine is a tremendous risk at this stage because it’s remarkably expensive to build and market one that has any chance in the mass market.

[G] And it has made improvements to its maps functions, Jetting users omit the navigational minutiae (细节) of local streets that often clutter other services’ directions.

43()

题型:单项选择题

路面工程施工中,级配砾石或天然砾石用做基层时,CBR值不应小于( )。

A.40%

B.50%

C.60%

D.70%

更多题库