用数字和化学符号表示: (1)5个二氧化氮分子______;(2)2个亚铁离子_

题型:问答题

问题:

用数字和化学符号表示:

(1)5个二氧化氮分子______;(2)2个亚铁离子______;

(3)地壳中含量最多的金属元素______;(4)3个铂原子______;

(5)保持二氧化碳化学性质的最小粒子______.

考点:构成物质的微粒(分子、原子、离子)
题型:问答题

下列句中“而”字意义和用法不同的一项是(  )

A.水浅而舟大也。(《逍遥游》)

B.怀帝阍而不见(《滕王阁序》)

C.成不敢敛户口,而又无所赔偿。(《促织》)

D.而翁归,自与汝复算耳。(《促织》)

题型:问答题

财务分析信息的种类?

题型:问答题

混凝土在运输时不应产生离析、分层现象,如有离析现象则必须在浇筑混凝土前进行()。

A.加水

B.二次搅拌

C.二次配合比设计

D.振捣

题型:问答题

背景


某公路工程全长67km,计算行车速度为100km/h,按高速公路标准设计。全线设置11座互通式立交桥、22座分离式立交桥、10座大桥、72座中小桥等。总投资为50.0354亿元。工程2003年4月开工,2005年底竣工通车。
某路桥公司通过竞标承接该项目的施工任务。由于该项目时间紧、任务重,为了保证公司在该项目中取得较好的权益,该工程项目部决定采用工程施工项目的成本管理,并制定了一系列降低成本的措施,内容如下:
(1)进行合同交底,使项目经理部全面了解投标报价、合同谈判、合同签订过程中的情况。
(2)项目经理部应认真研读合同文件,对可能变更的项目、可能上涨的材料单价等进行预测,对项目的成本趋势做到心中有数。
(3)企业根据招标标底编制标后预算;由项目经理部根据标后预算具体安排施工。
(4)制定先进的施工方案,选择先进施工方法,节约成本。
(5)落实技术组织措施。
(6)组织均衡施工,加快施工进度。
(7)提高机械利用率和完好率。
[

问题

]

该项目部制定的降低成本的措施是否正确,说明原因

题型:问答题

Home prices slid in November, raising questions about whether the housing recovery is robust enough to maintain a sustained turnaround. From October to November, home prices fell 0.2% after (1) 0.1% in October, according to a report Tuesday by Standard & Poor’s/Case-Shiller’s home price index. (2) five of the 20 metro areas (3) by the index saw price increases for the month.

On a(n) (4) basis, prices were 5.3% lower in November than in November 2008. Prices were the same as in late 2003. "What we’ve seen (5) the past couple of months is that the pace of (6) has fallen down," says Maureen Maitland of Standard & Poor’s. "Some markets have (7) Is that because we haven’t (8) the foreclosure (回赎权的取消) cycle Because of unemployment We’re not seeing the (9) we were seeing in the last summer months. "

Metro areas that have seen a retreat in home prices (10) Seattle, Charlotte, Las Vegas and Tampa. All four (11) gains they made in recent months (12) . (13) , for the 20-metro index, the annual rate of decline is improving. That (14) , with other recent housing reports that show prices (15) or accelerating, could point to (16) the housing market is starting to (17) its footing, some economists say. Existing home sale prices were $178 300 in December, which is 1.5% higher than December 2008, according to a report this week by the National Association of Realtors. That was the first year-over-year (18) in median price since August 2007.

"The most (19) thing we can say is not only the market is stabilizing, but we’ve seen that housing demand is p," says Bernard Baumohl, with the Economic Outlook Group. "Housing probably will continue to climb upwards through the summer, (20) it could slip a little as the tax credit expires. \

18()

A.gain

B.accomplishment

C.achievement

D.success

更多题库