问题 问答题 简答题

怎样消除与修补水泥地面的空鼓缺陷?

答案

参考答案:

消除空鼓的做法是:

(1)房心回填土严格分层,均匀结实。

(2)基层混凝土要振捣密实和平整,不平处用沙泥找平,控制高差在10mm以内。

(3)基层扫净,提前一天浇水湿润。

(4)结合层水泥浆水灰比控制在0.4左右,随浇随扫均匀,做到不积水、积浆和无干斑

(5)冬季养护避免局部温度过低。

对于已出现空鼓的修补方法是:对于房间边角处或面积不大于0.2平方米的空鼓(无裂缝),一般不作修补处理。对于人员活动频繁的空鼓之处,先将空鼓部分凿去,清理干净,提前一天浇水湿润,修补时先在底面和四周刷掺107胶的水泥浆一遍,然后用同原地面相同的水泥沙浆按施工要点进行修补。若是大面积空鼓,则应将整个面层凿去,重新铺抹面层。

阅读理解

March 21, 2014

After visiting the Beijing Normal School, Madame Peng took Sasha and Malia, my mother, and me to the Forbidden City, which is right in the heart of Beijing.

For more than 2,000 years (up until 1912), China was ruled by emperors who descended (传递)from many different dynasties, or families, who passed ruling positions on from generation to generation — and for nearly 500 years, the Forbidden City used as the emperor’s home.

Like the name suggests, the Forbidden City is large enough to be a city of its own — it includes nearly 1,000 buildings and nearly 10,000 rooms.

In 1925, the new Chinese government turned the Forbidden City into a museum so that visitors like us from all over the world can stroll (闲逛) through many of the beautiful rooms and outdoor spaces.

The Forbidden City is too large to go fully around in a single visit, but highlights include the following: The Hall of Union and Peace has almost 14,000 ornamental dragons. The Hall of Supreme Harmony is where the emperor watched birthday celebrations and coronation (加冕) ceremonies from his Dragon Throne. And then there are the Imperial Gardens, where you can walk along the paths and pavilions, admiring the beautiful rock arrangements, flowers and cypress (柏树) trees.

While we loved our visit to the Forbidden City, we only wish we had more time to see everything. But then again, I’m not sure there could ever be enough time to fully enjoy all of the art and history in this wonderful place.

(The First Lady’s Travel Journal: Touring the Forbidden City)

小题1:The writer visited The Forbidden City with _____________.

A. her daughters         B. her husband     C. her mother and two daughters

小题2:The Forbidden City is a _____________.

A. city              B. palace         C. garden

小题3:The Forbidden City was used as _____________ for nearly 500 years until 1912.

A. the emperor’s home                     

B. the emperor’s short-lived home

C. a place of interest for public

小题4:What does the word “highlights” mean?

A.景观亮点           B.聚光灯          C. 光亮

小题5:According to the passage, we can infer推断 that _____________.

A. They had enough time to visit every room

B. The Forbidden City served as a museum until 1925

C. The first lady enjoyed all of the art and history in this wonderful place

单项选择题