(三)A公司应邀参加氮制造厂合成压缩工段技改工程投标,招标书说明,以工期安排最短、最

题型:问答题

问题:

(三)

A公司应邀参加氮制造厂合成压缩工段技改工程投标,招标书说明,以工期安排最短、最合理为中标主要条件。A公司技术部门依据招标书指出的工程内容编制了网络计划(见下图)。

附加说明:

1.配管包括机泵本体配管25天,塔器本体配管20天,塔机间连接配管15天;

2.试运行包含空负荷单机和联动试运转,考虑不可预见因素较多,计划安排15天的试运行时间。

A公司总工程师审核认为网络图不符合最短工期要约,退回重编,要求附加说明。

经修改重编网络图,A公司最后中标。

施工中无损检测发现甲供的高压管件焊缝存在缺陷,退货重供,延误施工10天,A公司为保证总工期不变,加大投入,实施加班作业,最终如期完工。为此,A公司向业主发出索赔意向书。

以不压缩各工序的工作时间为前提条件,画出重编的网络计划图。工期可缩短多少天以节点符号表示出关键线路。并以重编的网络计划为前提,附加说明如何再进一步缩短工期

考点:二级建造师机电工程机电工程管理与实务
题型:问答题

利用人工加温,具有较完善的保温设备的()叫温床。

A.苗床

B.温室

C.冷室

D.冷床

题型:问答题

下列元素中,最高正化合价数值最大的是 (    )

A.Si

B.P

C.S

D.Cl

题型:问答题

就给定资料所反映的主要问题,用1200字左右的篇幅,自拟标题进行论述。要求中心明确,内容充实,论述深刻,有说服力。

题型:问答题

     As any homemaker who has tried to keep order at the dinner table knows, there is far more to a

family meal than food. Sociologist Michael Lewis has been studying 50 families to find out just how

much more.

     Lewis and his co-workers carried out their study by videotaping the families while they ate ordinary

meals in their own homes. They found that parents with small families talk actively with each other and

their children. But as the number of children gets larger, conversation gives way to the parents'efforts to

control the loud noise they make. That can have an important effect on the children. "In general the more

question-asking the parents do, the higher the children's IQ scores," Lewis says. "And the more children

there are, the less question-asking there is."

     The study also provides an explanation for why middle children often seem to have a harder time in

life than their siblings(兄弟姐妹). Lewis found that in families with three or four children, dinner

conversation is likely to center on the oldest child, who has the most to talk about, and the youngest,

who needs the most attention. "Middle children are invisible." Says Lewis. "When you see someone get

up from the table and walk around during dinner, chances are it's the middle child." There is, however,

one thing that stops all conversation and prevents anyone from having attention: "When the TV is on,"

Lewis says, "dinner is a non-event."

1. The writer's purpose in writing the text is to ______ .

A. show the relationship between parents and children

B. teach parents ways to keep order at the dinner table

C. report on the findings of a study

D. give information about family problems

2. By saying "Middle children are invisible" in paragraph 3, Lewis means that middle children ______ .

A. have to help their parents to serve dinner

B. get the least attention from the family

C. are often kept away from the dinner table

D. find it hard to keep up with other children

3. Parents with large families ask fewer questions at dinner because ______ .

A. they are busy serving food to their children

B. they are busy keeping order at the dinner table

C. they have to pay more attention to younger children

D. they are tired out having prepared food for the whole family

4. Lewis research provides an answer to the question ______ .

A. Why TV is important in family

B. why parents should keep good order

C. why children in small families seem to be quiet

D. why middle children seem to have more difficulties in life

5. Which of the following statements would the writer agree to?

A. It is important to have the right food for children.

B. It is a good idea to have the TV on during dinner.

C. Parents should talk to each of their children frequently.

D. Elder children should help the younger ones at dinner.

题型:问答题

在海拔高于1000m但低于3000m的地区,以下关于220kV及以下配电装置电器设备选择的说法正确的是( )。

A.不能选用一般电器产品;

B.可以选用相同电压等级的高原型电器产品;

C.可以选用相同电压等级但外绝缘提高一级的电器产品;

D.可以选用一般电器产品,但应用性能优良的避雷器来保护。

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