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【单选题】
【背景资料】某建筑工程，建筑面积24642㎡，地上10层，地下2层（地下水位-2.0m）。主体结构为非预应力现浇混凝土框架剪力墙结构（柱网为9m×9m，局部柱距为6m），抗震设防烈度7度。梁、柱受力钢筋为HRB335。结构主体地下室外墙采用P8防水混凝土浇筑，墙厚250mm，钢筋净距60mm，混凝土为商品混凝土。一、二层柱混凝土强度等级为C40，以上各层柱为C30。 情形1：施工过程中，施工单位进场的一批水泥经检验其初凝时间不符合要求，另外由于工期要求很紧，地下室外墙施工不得不在气温只有-3℃时进行。 情形2：钢筋工程施工时，发现梁、柱钢筋的接头采用挤压连接，有位、柱端箍筋加密区的情况。在现场留取接头试件样本时，是以同一层每600个为一验收批，并按规定抽取试件样本进行合格性检验。 情形3：结构主体地下室外墙防水混凝土浇筑过程中，现场对粗骨料的最大粒径进行了检测，检测结果为40mm。 请根据背景资料完成相应小题选项，其中判断题二选一（A、B选项），单选题四选一（A、B、C、D选项），多选题四选二或三（A、B、C、D选项）。不选、多选、、错选均不得分。 本工程基础混凝土应优先选用（　）。
A.
矿渣硅酸盐水泥
B.
火山灰硅酸盐水泥
C.
粉煤灰硅酸盐水泥
D.
普通硅酸盐水泥
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举一反三
【单选题】You are asked to identify a sample of bacteria under the microscope as either Streptococcal bacteria or Staphylococcal bacteria. Which of the following observations would lead you to identify the bact...
A.
Pleomorphic shaped bacteria that are not in chains
B.
Rod shaped bacteria that are not in chains
C.
Rod shaped bacteria in long chain formations
D.
Round shaped bacteria in square formations
E.
Round shaped bacteria in chain formations
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【单选题】Why are bacteria being used in the research study at the university?
A.
Bacteria have unusual cell formations.
B.
Bacteria live harmlessly on the skin.
C.
Bacteria are similar to other life forms.
D.
Bacteria cause many diseases in humans.
查看完整题目与答案
【单选题】Gram-negative bacteria differ from gram-positive bacteria because of the fact ( ).
A.
That in Gram-negative bacteria the peptidoglycan cell wall is only 1 or 2 layers thick, whereas in gram-positive bacteria it is many layers thick.
B.
That in gram-negative bacteria basic dyes and detergents are much more harmful than for gram-positive bacteria.
C.
That in gram-negative bacteria lipoprotein—which is not found in gram-negative bacteria—anchors the outer membrane to the capsule.
D.
That in gram-positive bacteria porin proteins are invariably found, and are not found in gram-negative bacteia.
E.
All of the above are ture.
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【判断题】露天工作场所遇有4级以上大风时，禁止高空作业。
A.
正确
B.
错误
查看完整题目与答案
【单选题】The author implies that bacteria were investigated earlier than viruses because
A.
bacteria are easier to detect.
B.
bacteria are harder to eradicate.
C.
viruses are extremely poisonous.
D.
viruses are found only in hot climates.
查看完整题目与答案
【单选题】露天工作场所遇有( )级及以上大风时禁止高空作业
A.
4
B.
5
C.
6
D.
7
查看完整题目与答案
【单选题】露天工作场所遇有（）级以上大风时禁止高空作业。
A.
4
B.
5
C.
6
D.
7
查看完整题目与答案
【简答题】A．The bacteria would be killed by the human immune system. B．The bacteria would die if brought to the suce. C．Many antidotes and remedies are available. D．Drilling operations are always closely mon...
查看完整题目与答案
【单选题】露天工作场所遇有（）以上大风时禁止高空作业。
A.
4级
B.
5级
C.
6级
D.
7级
查看完整题目与答案
【单选题】《车辆部门安全技术规则》规定，对使用梯子作业安全要求露天工作场所遇有（）以上大风时禁止高空作业。
A.
4级
B.
5级
C.
6级
D.
7级
查看完整题目与答案
相关题目：
【单选题】You are asked to identify a sample of bacteria under the microscope as either Streptococcal bacteria or Staphylococcal bacteria. Which of the following observations would lead you to identify the bact...
A.
Pleomorphic shaped bacteria that are not in chains
B.
Rod shaped bacteria that are not in chains
C.
Rod shaped bacteria in long chain formations
D.
Round shaped bacteria in square formations
E.
Round shaped bacteria in chain formations
查看完整题目与答案
【单选题】Why are bacteria being used in the research study at the university?
A.
Bacteria have unusual cell formations.
B.
Bacteria live harmlessly on the skin.
C.
Bacteria are similar to other life forms.
D.
Bacteria cause many diseases in humans.
查看完整题目与答案
【单选题】Gram-negative bacteria differ from gram-positive bacteria because of the fact ( ).
A.
That in Gram-negative bacteria the peptidoglycan cell wall is only 1 or 2 layers thick, whereas in gram-positive bacteria it is many layers thick.
B.
That in gram-negative bacteria basic dyes and detergents are much more harmful than for gram-positive bacteria.
C.
That in gram-negative bacteria lipoprotein—which is not found in gram-negative bacteria—anchors the outer membrane to the capsule.
D.
That in gram-positive bacteria porin proteins are invariably found, and are not found in gram-negative bacteia.
E.
All of the above are ture.
查看完整题目与答案
【判断题】露天工作场所遇有4级以上大风时，禁止高空作业。
A.
正确
B.
错误
查看完整题目与答案
【单选题】The author implies that bacteria were investigated earlier than viruses because
A.
bacteria are easier to detect.
B.
bacteria are harder to eradicate.
C.
viruses are extremely poisonous.
D.
viruses are found only in hot climates.
查看完整题目与答案
【单选题】露天工作场所遇有( )级及以上大风时禁止高空作业
A.
4
B.
5
C.
6
D.
7
查看完整题目与答案
【单选题】露天工作场所遇有（）级以上大风时禁止高空作业。
A.
4
B.
5
C.
6
D.
7
查看完整题目与答案
【简答题】A．The bacteria would be killed by the human immune system. B．The bacteria would die if brought to the suce. C．Many antidotes and remedies are available. D．Drilling operations are always closely mon...
查看完整题目与答案
【单选题】露天工作场所遇有（）以上大风时禁止高空作业。
A.
4级
B.
5级
C.
6级
D.
7级
查看完整题目与答案
【单选题】《车辆部门安全技术规则》规定，对使用梯子作业安全要求露天工作场所遇有（）以上大风时禁止高空作业。
A.
4级
B.
5级
C.
6级
D.
7级
查看完整题目与答案
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