《湖南省建设工程工程量清单计价办法》(湘建价[20093406号)规定工程竣工结算应

题型:多项选择题

问题:

《湖南省建设工程工程量清单计价办法》(湘建价[20093406号)规定工程竣工结算应当的依据有()。

A.施工合同

B.承包商提出的工程量

C.投标文件

D.招标文件

考点:建设工程造价管理基础知识建设工程造价管理基础知识题库
题型:多项选择题

金属是一种重要的材料,人类的生活和生产都离不开金属。 ⑴冶炼技术在中国有着悠久的历史。下图表示了金属活动性顺序表中铜、锡、铁和铝元素被人类大规模开发、利用的大致年限:

根据图中数据和有关的化学知识,你认为金属大规模开发、利用的先后顺序跟下列哪些因素有关?_______________________ ;

a.地壳中金属元素的含量 b.金属的导电性 c.金属的活动性 d.金属的延展性 e.金属冶炼的难易程度

(2)根据下图的应用实例,试说出金属具有的物理性质:

________________(至少写两点,只写一点不给分)

(3)常温下铝是一种活泼金属,但铝却有较强的抗腐蚀性,其原因是:_____________ ;

(4)早在春秋战国时期,我国古代人民已经开始炼铁,写出赤铁矿(Fe2O3)与CO在高温下反应的化学方程式_______________________。

题型:多项选择题

空压机通常在()后面设安全阀。

A.第一级

B.最末级

C.每一级

D.A或B或C

题型:多项选择题

对于手压泵液压球阀,在开关完后,应及时向球体密封圈充压.

题型:多项选择题

中煤的愿景是什么?

题型:多项选择题

Throughout the 19th century and into the 20th, citizens of the United States maintained a bias against big cities. Most lived on farms and in small towns and believed cities to be centres of (1) , crime, poverty and moral (2) Their distrust was caused, (3) , by a national ideology that (4) farming the greatest occupation and rural living (5) to urban living. This attitude (6) even as the number of urban dwellers increased and cities became an essential (7) of the national landscape. Gradually, economic reality overcame ideology. Thousands (8) the precarious (不稳定的) life on the farm for more secure and better paying jobs in the city. But when these people (9) from the countryside, they carried their fears and suspicions with them. These new urbanities, already convinced that cities were (10) with great problems, eagerly (11) the progressive reforms that promised to bring order out of the (12) of the city.

One of many reforms came (13) the area of public utilities. Water and sewerage systems were usually operated by (14) governments, but the gas and electric networks were privately owned. Reformers feared that the privately owned utility companies would (15) exorbitant (过渡的) rates for these essential services and (16) them only to people who could afford them. Some city and state governments responded by (17) the utility companies, but a number of cities began to supply these services themselves. (18) of these reforms argued that public ownership and regulation would (19) widespread access to these utilities and guarantee a (20) price.

(14)()

A.public

B.municipal

C.republican

D.national

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