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【单选题】
It is hard for modem people to imagine the life one hundred years ago, No television, no plastic, no ATMs, no DVDs. Illnesses like tuberculosis, diphtheria, pneumonia meant only death. Of course, cloning appeared only in science fiction. Not to mention, computer and Internet. Today, our workplace are equipped with assembly lines, fax machines, computers. Our daily life is cushioned by air conditioners, cell phones. Antibiotics helped created a long list of miracle drugs. The bypass operation saved millions. The discovery of DNA has revolutionized the way scientists think about new therapies. Man finally stepped on the magical and mysterious Moon. With the rapid changes we have been experiencing, the anticipation for the future is higher than ever. A revolutionary manufacturing process made it possible for anyone to own a car. Henry Ford is the man who put the world on wheels. When it comes to singling out those who have made a difference in all our lives, you cannot overlook Henry Ford. A historian a century from now might well conclude that it was Henry Ford who most influenced all manufacturing everywhere, even to this day, by introducing a new way to make cars—one, strange to say, that originated in slaughter houses. Back in the early 1900s, slaughter houses used what could have been called a ' disassembly line.' That is, the carcass of a slain steer or a pig was moved past various meat-cutters, each of whom cut off only a certain portion. Ford reversed this process to see if it would speed up production of a part of an automobile engine called a magneto. Rather than have each worker completely assemble a magneto, one of its elements was placed on a conveyer, and each worker, as it passed, added another component to it, the same one each time. Professor David Hounshell, of The University of Delaware, an expert on industrial development tells what happened: 'The previous day, workers carrying out the entire process had averaged one magneto every 20 minutes. But on that day, on the line, the assembly team averaged one every 13 minutes and 10 seconds per person.' Within a year, the time had been reduced W five minutes. In 1913, Ford went all the way. Hooked together by ropes, partially assembled vehicles were towed past workers who completed them one piece at a time. It wasn't long before Ford was turning out several hundred thousand cars a year, a remarkable achievement then. And so efficient and economical was this new system that he cut the price of his cars in half, to $260, putting them within reach of all those who, up until that time, could not afford them. Soon, auto makers over the world copied him. In fact, he encouraged them to do so by writing a book about all of his innovations, entitled Today and Tomorrow. The Age of the Automobile had arrived. Today, aided by robots and other forms of automation, everything from toasters to perfumes is made on assembly lines. Edsel Ford, Henry's great-grandson, and a Ford vice president: 'I think that my great-grandfather would just be amazed at how far technology has come.' Many of totay's innovations come from Japan. Norman Bodek, who publishes books about manufacturing processes, finds this ironic. On a recent trip to Japan he talked to two of the top officials of Toyota. 'When I asked them where these secrets came from, where their ideas came from to manufacture in a totally different way, they laughed, and they said. 'Well. We just read it in Henry Ford's book from 1926: Today and Tomorrow.'' To call Henry Ford 'the man who put the world on wheels', the author means
A.
he made quality wheels famous to the whole world.
B.
he produced cars for free for people all over the world.
C.
his innovation made it possible for anyone to own a car.
D.
his innovation provided everyone in the world with a car.
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参考答案:
举一反三
【单选题】下列关于电离度α的叙述中,不正确的是
A.
相同条件下,α的大小表示弱电解质的相对强弱
B.
α一般随温度升高而增大
C.
α增大时,相应的离子浓度也增大
D.
α增大,相应的离子数增多
E.
极性越小的化合物,α也越小
【单选题】根据耕地占用税法律制度的规定,下列说法不正确的是( )。
A.
医院内职工住房占用耕地的,按照当地适用税额缴纳耕地占用税
B.
占用园地、林地、草地、农田水利用地、养殖水面以及养殖滩涂等其他农用地建房或者从事非农业建设的,适用税额可以适当低于当地占用耕地的适用税额
C.
学校内教职工住房占用耕地的,免征耕地占用税
D.
按规定免征或者减征耕地占用税后,纳税人改变原占地用途,不再属于免征或者减征耕地占用税的情形的,应补缴耕地占用税
【判断题】对于有火焰的燃烧,因为燃烧过程中存在未受抑制的游离基(自由基)作中间体,所以,燃烧三角形增加了一个空间坐标,从而形成燃烧四面体。( )
A.
正确
B.
错误
【简答题】(4分)化学上常用电离度表示电解质的相对强弱:α=已电离的电解质分子数/溶液中原有电解质的总分子数×100%。 物质(微粒)及编号 电离度α A.硫酸溶液(第一步完全电离): HSO H + +SO 10% B.硫酸氢钠溶液:HSO H + +SO 29% CH 3 COOH CH 3 COO - +H + 1.33% D.盐酸:HCl=H + +Cl - 100% (1)25℃时,0.1 mol...
【简答题】离解度α、离解常数K θ 与浓度C的关系是:()随浓度C而变,而()不随浓度C而变。稀释定律的数学表示式为()。
【单选题】根据耕地占用税法律制度的规定,下列说法不正确的是( )。
A.
医院内职工住房占用耕地的,按照当地适用税额缴纳耕地占用税
B.
占用园地、林地、草地、农田水利用地、养殖水面以及养殖滩涂等其他农用地建房或者从事非农业建设的,应征收耕地占用税,适用税额可以适当低于当地占用耕地的适用税额
C.
农村居民经批准在户口所在地按照规定占用耕地,建设自用住宅免征耕地占用税
D.
按规定免征或者减征耕地占用税后,纳税人改变原占地用途,不再属于免征或者减征耕地占用税的情形的,应补缴耕地占用税
【单选题】解离度α表示的是( )
A.
未电离的弱电解质分子数与已电离的弱电解质分子数的比值
B.
已电离的弱电解质分子数与未电离的弱电解质分子数的比值
C.
已电离的弱电解质分子数与弱电解质分子总数的比值
D.
弱电解质分子总数与已电离的弱电解质分子数的比值
【单选题】关于电离度α的叙述,不正确的是
A.
相同条件下,α的大小表示弱电解质的相对强弱
B.
α一般随温度升高而增大
C.
α增大时,相应的离子浓度也增大
D.
α增大,相应的离子数增多
E.
极性越小的化合物,α也越小
【单选题】关于电离度α的叙述,不正确的是
A.
相同条件下,a的大小表示弱电解质的相对强弱
B.
a一般随温度升高而增大
C.
a增大时,相应的离子浓度也增大
D.
a增大,相应的离子数增多
E.
极性越小的化合物,a也越小
【简答题】电离度表示电解质的相对强弱,电离度的定义: α=(已电离的电解质分子数/溶液中原有电解质的总分子数)×100%。 已知25℃时几种物质(微粒)的电离度(溶液浓度均为0.1 mol·L -1 )如下表: 编号 物质(微粒) 电离度α A 硫酸溶液(第一步完全电离):  第二步 HSO 4 - H + +SO 4 2- 10% B 硫酸氢钠溶液:  HSO 4 - H + +SO 4 2 29...
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