下列关于混凝土强度与水灰比、温度、湿度以及骨料等因素密切相关的表述中正确的( )。

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问题:

下列关于混凝土强度与水灰比、温度、湿度以及骨料等因素密切相关的表述中正确的( )。

A.混凝土的强度主要取决于骨料强度

B.施工环境温度升高、水泥水化速度加快,混凝土强度上升也较快

C.混凝土结构松散,渗水性增大,强度降低的主要原因是施工时环境湿度太大

D.水灰比越小,越不能满足水泥水化反应对水的需求,混凝土强度也越低

考点:造价工程师建设工程技术与计量(安装)建设工程技术与计量(安装工程部分)77
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Welcome to Thriftbooks.com--- the best place on the web for cheap used books. Whether you are looking for storybook, science fiction or love stories, there are thousands of used books to choose from. The following are some of them. Why not choose some to read during your long cold winter vacation?

小题1:Thriftbooks.com is a website that __________________. 

A.sells used books

B.helps writers look for publishers

C.offers advice on reading

D.introduces new writers小题2:The writer of the The Very Hungry Caterpillar is _______________.

A.Kathryn Stockett

B.Sarah Winman

C.Eric Carle

D.Bill Martin Jr小题3: ______________ published The Help .

A.Berkley Trade  

B.Henry Holt and Co.

C.Philomel  

D.Headline Review小题4: ____________ is the most expensive of the four books.

A.The Help  

B.When God Was a Rabbit

C.The Very Hungry Caterpillar

D.Brown Bear, Brown Bear, What Do You See?小题5:All of the following are NOT mentioned(提及) in the passage ________________.

A.the names of the books

B.the publishing dates of the books

C.the number of the books

D.the writer of the books

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两株高果(G)南瓜杂交后,后代高果(G)和矮果(g)的比例是3:1,则亲本的基因组合方式应是[ ]

A.GG和gg

B.GG和Gg

C.Gg和Gg

D.gg和gg

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()是中国古代文学史上创造力最强、艺术成就最高的女作家。

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当检测结果在某一浓度作为医学解释是最关键的浓度时称这一浓度为()

A.平均浓度

B.平均水平

C.决定水平

D.阈值

E.临界水平

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项目管理流动红旗竞赛包括安全管理流动红旗、()、项目管理流动红旗3个竞赛内容。

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