问题 问答题

(一)

[背景资料]

某施工单位于业主签订了施工总承包合同.施工单位按时向监理工程师提交了单位工程施工组织设计,其双代号网络计划图如图1所示。

该工程在施工过程中发生了如下事件:

事件1:基础2工程A施工过程中,因业主起供应的钢筋混凝土预制桩供应不及时,使该基础设施工程延误5天,造成的人员窝工费3万元。

事件2:因罕见的特大暴雨引发山洪暴发,造成G工程延迟10天,现场临时道路、管网和其他临时设施遭到破坏,返修后损失6万元,承包人的机械设备损坏3万元,停工费2万元。

事件3:施工机械发生故障,后加班抢工导致F工作延迟5天,加班造成的费用为1万元。

事件4:建设单位提出设计变更,导致E工作延误5天,损失费用5万元。

事件5:施工单位管理不当,发生事故,D工作停工5天。

原网络图有几条线路关键线路为什么总工期为多少

答案

参考答案:

4条线路。关键线路为①→②→④→⑦→⑧→⑨,A→D→G→I→J,总工期为80天。

阅读理解

According to the United States government, people are classified as homeless if they have no place to stay and no expectation of finding a place for the next thirty days. Although technically accurate, that is an impersonal assessment of an enormous and very human problem.

The homeless population represents all of us Americans. It includes men and women, the elderly, children, and infants. Its members are from all ethnic groups. What they have in common is poverty.

Currently in the U.S., thirty-nine million people live in poverty. When money is really tight, paying the rent or buying food often becomes a choice. Government assistance in the form of food stamps does help but, as one homeless man explains, you can’t pay the rent with food stamps.

With no money for rent, the streets and homeless shelters become the alternative.

Although men make up the largest group within the homeless population, homeless women with children are rapidly joining them. In fact, one quarter of the homeless people in the U.S. are teenagers and young children.

People may become homeless for numerous reasons. However, there are certain factors that many of these individuals have in common. They include a lack of adequate education and job skills. A majority of the teenagers and adults have not completed high school.

The abuse of alcohol and drugs is also a common factor. One third of the adult homeless population abuses alcohol, while one quarter of the same group uses drugs.

Some members of this population suffer mental health problems. Within the past several years many institutions for the mentally ill have been closed and their patients sent “home”. Unfortunately, a number of those people have no home to go to and they are unable to adequately look after themselves.

Job loss in today’s economy has also become a real factor in the loss of people’s homes. The breakup of families through abandonment and divorce is also contributing factors, particularly when there are children involved. The parent who is left to care for the kids with inadequate income may be forced to depend on the homeless shelters to put a roof over their heads.

小题1:The writer thinks that the U.S. government’s definition for the homeless shows _________.

A.an insincere attitude toward the homeless

B.an unbearable attitude toward the homeless

C.an uncivilized attitude toward the homeless

D.an unsympathetic attitude toward the homeless小题2:The U.S. government helps the homeless by _________.

A.giving them homeless allowance

B.giving them food stamps

C.finding jobs for them

D.finding residence (a place to live) for them小题3:People become homeless for all the following reasons EXCEPT _________.

A.the lack of adequate education

B.the abuse of alcohol and drugs

C.the closure of institutions for the mentally ill

D.the poor performance of economy小题4:The breakup of families is likely to lead to homelessness because a parent with kids may _________.

A.lose his or her job in today’s economy

B.be unable to look after the kids

C.not have enough income

D.find residence at a homeless shelter

单项选择题