题目内容
（请给出正确答案）
A.15m3、4m
B.20m3、4m
C.12m3、5m
D.20m3、5m
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（由简答题聘请的专业题库老师提供的解答）
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更多“根据《建筑设计防火规范》厂房的防火间距规定，总储量小于等于（）的丙类液体储罐，当直埋于厂房外墙外，且面向储罐一面（）范围内的外墙为防火墙时，其防火间距可不限”相关的问题
B．0．50h
C．0．75h
D．1．00h
B．中央及省级治安、防灾和网局级及以上的电力等调度指挥中心内的通信机房和控制室
C．两万线以上的市话汇接局和六万门以上的市话端局内的程控交换机房、控制室和信令转接点室
D．国际电信局、大区中心、省中心和一万路以上的地区中心内的长途程控交换机房、控制室和信令转接点室
The scientists say that the human body has changed very little since human first appeared on the earth, but the way we live has changed greatly.Our body has not been able to deal with these changes in life style. (方式) and this has led to new kinds of sicknesses.These new sicknesses were not known in ancient times (古代).So they are called “diseases of civilization”.Many cancers and diseases of the blood system (系统),including heart attacks and stroke (中风) are examples of such diseases.
Scientists noted that people in both the Old Stone Age and the New Stone Age enjoyed very little alcohol (酒精) or tobacco (烟草),probably none.Ancient people also got a great deal of physical exercise, but a change in food is one of the main differences between life in ancient times and that of today.
Stone-age people hunted wild animals for their meat, which had much less fat than domestic or tame ones (家畜).They also ate a lot of fresh wild vegetables and fruits.They did not have milk or any other dairy products, and they made very little use of grains.But today, we eat a large amount of these.We eat six times more salt than our remote ancestors.We eat more sugar.We eat twice as much fat but only one third as much protein (蛋白质) and much less vitamin.(维生素) C.
People today probably do not want to live the way people thousands of years ago did, but scientists say that we would be much healthier if we ate much the same way our remote ancestors did ,cutting the amount of fatty, salty and sweet food.
1.According to the passage, people in industrialized nations would be much healthier if they eat()
A.more food as human living 10,000 years ago did
B.as human living 10,000 years ago ate
C.more kinds of food eaten by people living over 10,000 years ago
D.more of the same kind of food eaten by people over 10,000 years ago
2.New kinds of sicknesses have been found because().
A.the human body has changed compared with(同……比较) human first appeared on the earth
B.the way we live has changed a little
C.our body can't deal with the changes in life style
D.the way we live today is proper for the human body
3.What is the main cause that people suffer from a lot of new sicknesses? ()
A.Ancient people did a great deal of physical exercise
B.People today have a lot of alcohol
C.People today have more tobacco
D.Food today is quite different from that of ancient times
4.Which of the following belongs to the dairy product?()
A.Milk
B.Corn
C.Pork
D.Flour
5.According to some scientists, Stone-age people were much healthier than people today because they ate a lot of ______.
A.milk and other dairy products
B.wild animals, fresh.wild vegetables and fruits
C.salt and sugar
D.grain foods
Broadband is used for high-speed Internet connections at a fixed monthly rate.It turns an exciting telephone line into a high-speed digital line capable of carrying data up to 40 times conventional modem speeds.Any download is available at the click of a mouse-there is no dial-up as there is with standard Internet Service Providers.
For home owners and families there are many advantages.One of the most important is simultaneous(同时的)access to both telephone lines and the Internet.No queses and no delay.
For businesses, broadband can improve customer relations and provide direct access to corporate e-malls and databases.Entire operations can go online.
1.The function that broadband technology has on the new digital economy is ___.
A.further
B.critical
C.costly
D.global
2.How much does a user pay if he has broadband technology installed? ()
A.It depends on the length of time
B.It depends on the times of dial-up
C.He pays at a fixed monthly rate
D.He pays a lot of money
3.Compared with the modem speed the broadband technology can transmit data___.
A.at up to forty times of ordinary speed
B.much faster
C.at a high-speed
D.within a second
4.Who can take advantage of the broadband technology according to the passage? ()
A.Family members
B.College students
C.Both home owners and businessmen
D.Only businessmen and their partners
15.With the broadband technology companies can have all their operations done()
A.during the work days
B.during the whole week
C.online
D.offline
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