问题 单项选择题

根据()的形状可以大致地判定该煤洗选的难易程度

A、λ曲线

B、δ曲线

C、£曲线

D、&曲线

答案

参考答案:A

问答题

某工程,建设单位与施工单位按照《建设工程施工合同》(示范文本)签订了施工承包合同。合同约定:工期6个月;A、B工作所用的材料由建设单位采购;合同价款采用以直接费为计算基础的全费用综合单价计价;施工期间若遇物价上涨,只对钢材、水泥和集料的价格进行调整,调整依据为工程造价管理部门公布的材料价格指数。招标文件中的工程量清单所列各项工作的估算工程量和施工单位的报价如表4—1所示,该工程的各项工作按最早开始时间安排,按月匀速施工,经总监理工程师批准的施工进度计划如图4—1所示。

在施工过程中发生如下事件。 事件1:施工单位有两台大型机械设备需要进场,施工单位提出应由建设单位支付其进场费,但建设单位不同意另行支付。 事件2:建设单位提供的材料运抵现场后,项目监理机构要求施工单位及时送检,但施工单位认为,施工合同专用条款并未对此做出约定,因此,建设单位提供的材料,施工单位没有送检的义务,若一定要施工单位送检,则由建设单位支付材料检测费用。 事件3:当施工进行到第3个月末时,建设单位提出一项设计变更,使D工作的工程量增加2000 m3。施工单位调整施工方案后,D工作持续时间延长1个月。从第4个月开始,D工作执行新的全费用综合单价。经测算,新单价中直接费为160元/m3,间接费费率为15%,利润率为5%,计税系数为3.41%。 事件4:由于施工机械故障,G工作的开始时间推迟了1个月。第6个月恰遇建筑材料价格大幅上涨,造成F、G工作的造价提高,造价管理部门公布的价格指数如表4-2所示。施工单位随即向项目监理机构提出了调整F、G工作结算单价的要求。经测算,F、G工作的单价中,钢材、水泥和集料的价格所占比例均分别为25%、35%和10%。

指出事件2中施工单位说法的正确和错误之处,分别说明理由。

单项选择题

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.quickly
B.easily
C.roughly
D.decidedly