问题 问答题

(四)

某地区新建一座大型自来水厂,主要单位工程有沉淀池、过滤池、消毒池等,整个工程由W建筑公司中标施工。其中沉淀池为无盖圆形池,直径40m,基础为现浇混凝土结构,厚500mm,该基础由四周向中心呈漏斗型,其高点顶面标高22.50m,低点顶面标高22.10m;池壁采用预制板拼装外缠绕预应力钢丝结构,强度等级为C40。沉淀池现况原地下水位标高26.50m。
问题

为保证壁板缝施工质量,从安装模板、混凝土浇筑、混凝土振动、混凝土养护几个工序简述如何操作。

答案

参考答案:

解析:为保证壁板缝施工质量,从安装模板、混凝土浇筑、混凝土振动、混凝土养护几个工序的操作: 模板安装:板缝内模板一次安装到顶,并填塞缝隙防止漏浆。外模板随浇筑板缝混凝土随安装,保证不跑模不漏浆,一次安装高度不宜超过1.5m。 混凝土浇筑:分层浇筑高度不宜超过250mm,注意混凝土和易性。二次混凝土入模不得超过混凝土初凝时间。 混凝土振动:机械振动和人工振动相结合,确保不漏振、不过振。 混凝土养护:连续湿润养护不少于7d。

解答题
阅读理解

阅读理解。

     Believe it or not, America's favorite snack food is the potato chip. There is a story behind how it was

first made. One might think that something genius thought up the first potato chips, but it didn't happen

that way. The Moon Lake Restaurant was a well-known restaurant in New York in 1853. Its menu included

French-fried potatoes: a popular food recipe brought back from France by Thomas Jefferson. These were

thickly cut potatoes, fried until golden brown and crisp in the outside. One evening a guest in the dining hall

felt that his potatoes were too thick and sent them back to the kitchen. The cook sliced some potatoes thinner

than before and prepared them for the complaining guest. He was still not satisfied and sent them back again!

By this time the cook was angry and decided to do exactly what the dinner guest wanted: slice the potatoes

as thin as possible. Then they would be so crisp that the diner wouldn't be able to use his fork to eat them.

When the paper thin browned potatoes arrived the dinner was pleased. He was so happy with them that other

guests started ordering the new potatoes. The cook's plan to stop the dinner guest from complaining did not

turn out as he had planned. Soon Saratoga Chips appeared on the menu and became so popular that people

wanted to take some home. The restaurant started selling small packages of the potato chips. A few years later

they were selling all over the United States. But because the potatoes had to be peeled by hand, it was a time-

consuming chore and potato ships were often out of stock. In the 1920s a mechanical potato peeler was

invented and soon there were potato chips in abundance. They gradually spread all over the world, and have

remained popular ever since.

1. According to this passage,the cook of the Moon Lake Restaurant _____. [ ]

A. enjoyed making potato chips very much

B. wanted to silence a guest's complaining

C. liked playing jokes on guests

D. was pleased that other guests liked the chips

2. The restaurant started to sell potato chips because _____.[ ]

A. potato chips were liked by people

B. the dinner guest asked for them

C. it was not difficult to cook them

D. they were pleased with the thick potato chips

3. According to this passage, mass production of potato chips was made possible when _____. [ ]

A. potatoes could be peeled by machines

B. potatoes were peeled by a large number of cooks

C. there was a growing demand for them

D. they first appeared in a restaurant

4. Potato chips have been popular in the US _____. [ ]

A. for more than 200 years

B. ever since 1920

C. for less than 100 years

D. since the 19th century