Fly ash can partly take the place of ______.A. paving materialB. cementC. concreteD. the coal by-product
题目
Fly ash can partly take the place of ______.
A. paving material
B. cement
C. concrete
D. the coal by-product
相似考题
参考答案和解析
答案为B。根据第一段倒数第二句，and can replace up to 20 percent of the cement used in concrete, "replace"相当于“take the place of”
更多“Fly ash can partly take the place of ______.A. paving materialB. cement C. concrete D. ”相关问题
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第1题：
The traffic is heavy this day, I arrive a bit late, so could you save me a place?
A. can B. must C. need. D. might
正确答案：D
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第2题：
What cannot be learned from the passage?
A、computers will take the place of nurses in the future
B、it is not likely that computers can plan their own moves in chess games
C、it is not likely that computers can perform. tasks as well as people do
D、some programs have been written to give the computers i
参考答案：ABD
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第3题：
It’S e__________________ for him to fly a kite．He can fly it well．
正确答案：
easy
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第4题：
Which of the following words can best take the place of the word“relish”in the second paragraph?
A. choose
B. enjoy
C. prepare for
D. carry on
正确答案：B
73.选B。参照第71题。作者开始并不享受火车之旅。 -
第5题：
The last paragraph suggests that______.
A. a modern computer won't be down
B. computers can take the place of humans
C. there will be great changes in computers
D. sometimes a computer may bring suffering to people
正确答案：D40．答案为D 根据文章最后一段的描述：电脑死机，旅客们感到烦躁不安，从而可推知此题答案为D。
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第6题：
What is a by-product of burned coal?
A. Aluminum, silicon, and magnetic.
B. Paving material.
C. Fly ash.
D. Concrete additive.
正确答案：C
答案为 C。根据题干找到第一段第三句， two kinds of ash by-product are produced： a heavy bottom ash and a fine-as-powder fly ash符合题意。 -
第7题：
What can be extracted from fine-powder fly ash?
A. Aluminum, silicon, and magnetic.
B. Additive.
C. Paving material.
D. Cement.
正确答案：A
答案为A。根据第二段第一句，In addition to using fly ash as a concrete additive，the technology is available to extract the main mineral components-aluminum，silicon，and magnetic作出该项选择。 -
第8题：
Excuse me, how far is the airport from here? （）
AYou can take a taxi.
BIt‘s about thirty miles.
CI‘ll fly to Sidney.
DIt‘s only six hundred dollars.
B
略 -
第9题：
Excuse me, how far is the airport from here? （）
- A、You can take a taxi.
- B、It‘s about thirty miles.
- C、I‘ll fly to Sidney.
- D、It‘s only six hundred dollars.
正确答案:B -
第10题：
CFG桩是CFG桩水泥粉煤灰碎石桩的简称（即cement fIying-ash gravel pile）。
正确答案:正确 -
第11题：
单选题--Excuse me, how far is the airport from here? --（）AYou can take a taxi.
BI’ll fly to Sydney.
CIt’s about thirty miles.
DIt’s only six hundred dollars.
正确答案： C解析： 暂无解析 -
第12题：
单选题Oxford is a city with such a mind-blowing reputation that many who come herefind themselvs ______ by the place and can’t wait to leave, while others, who take to it like a duck to water, find themselves returning again and again.Athreatened
Bintimidated
Cdeprived
Dmaltreated
正确答案： C解析：
句意：牛津是一个使人兴奋的城市，那些被它吓到的人迫不及待的要离开，而那些喜欢它的则如鱼得水一般一次次的回来。intimidated和threatened都有“受到威胁，害怕”意思，但intimidated暗指存在迫使人行动或使人不再行动的令人害怕的力量，threatened常指存在不安或不祥的征兆。deprived被剥夺。maltreated被虐待。根据句意，“等不及离开”的原因应是“被吓到了”,所以选B。 -
第13题：
What are recommended for the candidates to do before the interview?
A.Bring many enough copies of the résumé with you.
B.Ask about who will participate in the interview.
C.Get to know the route to the place and how long it will take.
D.Find out if they can park near the place or not.
参考答案：A、C、D
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第14题：
I don’t think television will ever ________ books.A.take place
B.take place of
C.take the place
D.take the place of
参考答案：D
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第15题：
During a recent OSPF election among three routers, RTA was elected the DR and RTB was elected the BDR, as seen in the graphic. Assume that RTA fails, and that RTB takes the place ofthe DR whi le RTC becomes the new BDR. What will happen when RTA comes back online？（）
A. A new election will take place establishing an all new DR and BDR based on configured priority levels and MAC addresses.
B. RTA will take the place of DR immediately upon esta blishing its adjacencies.
C. RTA will take the place of DR only if RTB fails.
D. RTA will take the place of DR only if both RTB and RTC fail.
参考答案：D
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第16题：
It can be concluded that
A.each sport will take only on hour
B.students will be chaarged for the four sports
C.all the sports will take place at Kowloon Peak
D.teachers will accompany students on each sport
正确答案：D
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第17题：
Passage Three
In an age when waste today means a lack tomorrow, making use of every available resource becomes more and more important. As coal is being used in greater and greater amounts to produce electricity, larger amounts of ash, by-product of coal, are produced. When coal is burned
in a boiler, two kinds of ash by-product are produced, a heavy bottom ash and a fine-as-powder fly ash that is filtered and captured by precipitators. About 10 to 15 percent of the coal by-product is bottom ash which is used like sand on icy city streets and highways and also on highways as paving material. It is the fly ash, however, that is receiving the greater amount of attention. Fly ash may be used as an additive to concrete in the construction of dams, bricks, and roads, and can replace up to 20 percent of the cement used in concrete. As a by-product of burned coal, fly ash requires no additional expenditure of energy to be produced, while cement production requires great amounts of energy.
In addition to using fly ash as a concrete additive, the technology is available to extract the main mineral components-aluminum, silicon, and magnetic. Today, extracting these components is a very expensive process, but the time may come when it is cheaper to extract these products from ash than to mine new supplies.
41. What can be used as a material to pave roads?
A. The coal by-product.
B. Additive.
C. Fine-as-powder fly ash.
D. Both B and C.
正确答案：A
答案为 A。根据题干找到第一段第三、四句，About 10 to 15 percent of the coal by-product is bottom ash which is used like sand on icy city streets and highways and also on highways as paving material 符合题意。 -
第18题：
According to the passage, what attracts man's greater attention?
A. Fly ash.
B. The construction of dams, bricks, and roads.
C. Extracting aluminum, silicon, and magnetic from ash.
D. The available technology.
正确答案：A
答案为A。根据第一段最后一句，As a by-product of burned coal，fly ash requires no additional expenditure of energy to be produced，while cement production requires great amounts of energy作出该项选择。 -
第19题：
Where does the conversation most probably take place?
A. In the manager’s office. B. In the room of the guest. C. At the police station.
正确答案：B
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第20题：
（）are the three different coatings which can protect metal from corrosion.
- A、Cement wash, bitumen and paint
- B、Metal primers, undercoats and topcoats
- C、Varnishes, heat-resistant paints and anti-fouling paints
- D、Cement wash, primer and undercoat
正确答案:A -
第21题：
（）can give a hard-wearing surface and the required color.
- A、Primers
- B、Undercoats
- C、Topcoats
- D、Cement wash
正确答案:C -
第22题：
单选题More than one stage of evaporation can take place by admitting the sea water into chambers with progressively （） pressure in the flash evaporator.Alower
Bhigher
Cthe lower
Dthe higher
正确答案： D解析： 暂无解析 -
第23题：
判断题CFG桩是CFG桩水泥粉煤灰碎石桩的简称（即cement fIying-ash gravel pile）。A对
B错
正确答案： 对解析： 暂无解析