问题 问答题 案例分析题

某建设单位新建办公大楼,将机电设备安装工程发包给A公司,合同约定工程材料由A公司采购,工程设备由建设单位自行采购。A公司将智能化工程和虹吸雨排水工程分别进行了专业分包。自有施工队伍按给排水、电气和通风空调三个施工队分别进行施工部署。根据土建施工单位提供的网络计划,项目部召集相关单位和人员召开协调会,明确了主要工序施工时间节点,编制了施工组织设计,排布了机电安装工程施工网络进度计划,分专业拟定了设备、材料进场计划。提交业主和监理单位,获得批准。

施工期间,发生了如下事件:

事件1,由于场外预制的空调风管运输途中因汽车开行不慎毁坏庄稼与村民发生矛盾,导致风管无法进场,对给排水和电气专业施工也造成了相应影响。经多方协调,风管得以进场,比原计划进场时间滞后2d;相关专业调整了部分工作,最终将对总工期的延误减少到1d。

事件2,按既定网络计划,土建施工单位通知A公司项目部,空调机组设备基础将于1周后施工,但由于设备品牌和选型迟迟没有确定,设计图纸滞后,地脚螺栓无法定位。经协调,在原定设备基础施工时间5d后拿到了空调机组施工图,相关专业调整了部分工作,最终将对总工期的延误减少到2d。

在现场组装轴流风机时,应注意哪些问题?

答案

参考答案:

在现场组装轴流风机时,应注意问题:

(1)在现场组装轴流风机的叶片时,若各叶片的角度不符合设备的技术文件的规定,将影响风机的出口风压和风量,叶片角度组装得不一致,将造成风机运转产生脉动现象。

(2)为了减少离心风机运转时产生的振动对其他精密设备和建筑结构的影响,降低环境噪音,在风机底座支架与基础之间放置各组减震器时,除要求基础表面平整外,应注意减震器的选择和安放位置,使受力的各组减震器承载荷重的压缩量均匀,不得偏心。

单项选择题
阅读理解

III.  Reading comprehension: (40%)

A

For every five men in the Civil War who died in battle , two or three died of disease. Doctors of that time knew very little about causes of sickness or ways of preventing it. Thousands of men in poor health became soldiers. Many of them could not resist epidemic (瘟疫)diseases that went through the places where they lived .

Army life was hard. Soldiers got little fruit or vegetables. There was no milk unless they happened to find a cow. Neither their clothes nor their living places protected the troops from rain, snow, and cold . Sickness and disease were spread by insects , rats , and unclean drinking water . Often the men drank straight from muddy streams .

Gunshot wounds were serious, as in any war, but they did not cause as many deaths as disease did.

1. Disease caused ___.                                                    

A.only a few deaths  B.fewer deaths than wounds did

C.more deaths than wounds did   D.both A and B

2.Men who were accepted as Civil War soldiers were ______.       

A.known to have already had some epidemic diseases

B.required to be in perfect health

C.able to resist epidemic disease easily   D.sometimes in poor health

3.Army life was hard for troops because ______          

A.the place where they lived didn't keep them safe from bad weather

B.they had no warm clothing

C.they seldom had good, healthful food   D.all of the above

4.Insects and rats were dangerous because they ______      

A.destroyed food  B.carried diseases

C.made the water unclean  D.tore the soldiers' clothes into pieces

5.The best title for this selection is ______.          

A.The Cause of Disease  B.The Greatest Danger in the Civil War

C.Insects, Rats, and Gunshot Wounds  D.The History of Epidemic Disease