问题 问答题

某高速公路工程项目,施工项目经理部为了更好地对施工现场材料进行管理,根据工程的性质、工期和施工条件,同时考虑材料供应市场情况的影响,对施工主要材料提出了如下要求。
(1)使用土质材料时必须了解其主要的物理机械特性;
(2)用于施工的粗集料应具有足够的强度和耐磨性,并且清洁、干燥、无风化、无杂质;
(3)施工用石粉应采用合成性岩石磨制的石粉,并且不应含泥土杂质和团粒;
(4)施工用水泥中的氧化镁和三氧化硫含量应符合规定;
(5)用于路面底层的粉煤灰应按等级使用;
(6)施工用水泥混凝土中的水泥应采用专用水泥;
(7)施工用沥青材料和钢材必须符合各项规定。
[问题]

粉煤灰是按什么标准来划分等级的

答案

参考答案:粉煤灰是按细度、含水量、烧失量和三氧化硫含量来划分等级的。

阅读理解

阅读理解。

                                                     Like a Heaven on Earth

     Many cities have slogans (宣传标语) to attract you to visit and spend your tourist money. These are

usually written by a travel agency, and no matter how clever or well thought out, they often fall on the deaf ears of experienced travelers. But there are proverbs that are time-tested-like this one, which translates

to: Up in the sky there is heaven, down on earth there is Suzhou and Hangzhou.

     That's a pretty bold declaration (宣言) when you consider the size of China and the many beautiful

places to see within its borders. Yet, Suzhou's beauty has won it boasting (自夸) rights.

     Suzhou, built in 514 BC, has a storied past. Marco Polo spent time there in 1276 while on the Silk

Road. Sun Tzu wrote The Art of War in Suzhou when it was the kingdom of Wu.

     While famous for its gardens, Suzhou has long been inspirational to artists, musicians and craftsmen.

There is far more to Suzhou than its gardens - respect for art, just for starters.

     There is a peaceful air that reflects the spirit of the area. You can see that it is a city trying to remain

very livable and keep its beauty even as it grows.

      Perhaps it's the smiles you see on the streets, or maybe the way they take care of the elderly in the

city. Maybe it is the way they promote art and culture as the government provides studio space for artists

to work on their traditional skills - or it could be that there are pockets of beauty all over the city.

       You don't have to go far to find one of these to escape the honking horns (汽车喇叭响) or the

electric bikes, and find your own little piece of Heaven on Earth.

1. The underlined phrase "fall on the deaf ears" probably means _____.  

A. are paid no attention to                  

B. are noticed    

C. are paid much attention to               

D. are understood

2. What dose the author think of Suzhou's slogan?

A. It needs to be better translated.      

B. A travel agency wrote the slogan.

C. It matches reality.                  

D. It is meaningless.

3. The author believes tourists appreciate Suzhou mainly because of ______.

A. its long history                    

B. its convenient facilities

C. the beautiful gardens in the city      

D. the atmosphere and spirit of the city.

4. According to the article, which of the following statements about Suzhou is NOT TRUE?

A. It attracts many artists.      

B. Drivers are not allowed to honk in Suzhou.

C. Its has a history of over 2000 years.

D. The large number of tourist visitors has affected its culture.

判断题