背景某二级公路的主要工序如下表:工作代号工作名称备 注A施工准备 B路基土石方开挖其

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问题:

背景

某二级公路的主要工序如下表:

工作代号工作名称备 注
A施工准备 
B路基土石方开挖其中部分石方需爆破施工
C挡墙基坑开挖 
D涵洞施工 
E桥梁基础施工钻孔灌注桩基础
F上边坡防护工程施工分5级,平均高40m
………………

施工单位编制了如下网络计划:

施工中发生了如下事件:

事件一:由于施工单位设备故障,导致C工作中断4d。

事件二:由于百年一遇的冰雪灾害,导致D工作晚开工15d。

事件三:由于图纸晚到,导致E工作停工10d。

针对上述事件中的暂停施工,施工单位在合同规定时间内向监理提出了延期申请和费用索赔的要求。合同约定,成本损失费为人民币1.5万元/d,利润损失费为人民币0.2万元/d。

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问题

]

计算图示网络工期,并指出关键线路。

考点:二级建造师公路工程公路工程管理与实务
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[问题3] 一般来说网站的默认文档名称是什么

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For many people today, reading is no longer relaxation. To keep up their work they must read letters, reports, trade publications, interoffice communications, not to mention newspapers and magazines: a never ending flood of words. In (1) a job or advancing in one, the ability to read and comprehend (2) can mean the difference between success and failure. Yet the unfortunate fact is that most of us are (3) readers. Most of us develop poor reading (4) at an early age, and never get over them. The main deficiency (5) in the actual stuff of language itself—words. Taken individually, words have (6) meaning until they are strung together into phrases, sentences and paragraphs. (7) , however, the untrained reader does not read groups of words. He laboriously reads one word at a time, often regressing to (8) words or passages. Regression, the tendency to look back over (9) you have just read, is a common bad habit in reading. Another habit which (10) down the speed of reading is vocalization—sounding each word either orally or mentally as (11) reads.
To overcome these bad habits, some reading clinics use a device called an (12) , which moves a bar(or curtain) down the page at a predetermined speed. The bar is set at a slightly faster rate (13) the reader finds comfortable, in order to "stretch" him. The accelerator forces the reader to read fast, (14) word by word reading, regression and subvocalization practically impossible. At first (15) is sacrificed for speed. But when you learn to read ideas and concepts, you will not only read faster, (16) your comprehension will improve. Many people have found (17) reading skill drastically improved after some training. (18) Charlie Au, a business manager, for instance. His reading rate was a reasonably good 172words a minute (19) the training; now it is an excellent 1,378 words a minute. He is delighted that how he can (20) a lot more reading material in a short period of time.

A.scales
B.cuts
C.slows
D.measures

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土地收益金

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下列货物缴纳增值税适用13%税率的有()。

A.粮食

B.农产品

C.图书

D.农机配件

题型:问答题

记账以后,如发现记账错误是由于记账凭证所列会计科目有误引起的,应采用( )进行错账更正。

A.划线更正法

B.红字更正法

C.补充登记法

D.B或C都行

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