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【单选题】
The questions in this group are based on the content of a passage. After reading the passage, choose the best answer to each question. Answer all questions following the passage on the basis of what is stated or implied in the passage. Dear Sirs, Given all the coverage that the emergence of hybrid cars has received in your pages in recent months, your readers may be interested to learn that gasoline-electric hybrids are not a new phenomenon at all, but rather the latest incarnation of an idea that has been kicking around for over a century. Indeed, the hybrid car has been around almost as long as the automobile itself. At the turn of the twentieth century, as the automotive age dawned, three power-generating technologies competed for dominance: steam, gasoline, and electricity. In the year 1900, steam was well known as the power source of the industrial revolution, and electricity was widely regarded as the power source of the future, so it was not at all obvious that internal combustion engines burning a fractional distillate of crude petroleum would have any particular edge in this race for the powertrains of America. Indeed, when engineer H. Piper filed the first patent application for a gasoline-electric hybrid motor in 1905, his intention was to use the gas to give a little kick to his perfectly serviceable electric engine. His goal: an engine that could accelerate from 0 to 25 miles per hour in 10 seconds. Piper achieved his goal. Electric and hybrid-electric engines powered more than 35,000 vehicles sold in 1912. These cars were perfectly adequate for the time, but over the following decade they mostly disappeared from the market, through no fault of their own. The cause of their decline was the spectacular improvements in the cost and performance of gasoline-powered cars. An onslaught of fast and cheap internal combustion cars from Ford, General Motors, and Buick essentially buried the electric and electric-hybrid motors by the 1920s. Continuing performance improvements in internal combustion engines and inexpensive gas pretty much kept hybrids buried until the oil crises of 1973 and 1979 gave Americans a reason to start thinking about fuel efficiency. Engineers had the motivation to think about fuel-efficient hybrids, but they still lacked the means to make hybrids economically competitive with gas-powered cars, because the performance of gas-electric engines lagged far behind that of gas-powered engines in acceleration, top speed, and cruising range. Dramatic improvements in electronics and computer technology during the 1990s, however, finally made the hybrid a reality. Advances in battery performance and, most importantly, computer-guided electric power transfer created a car that could drive like a regular car, but do so on half the tank of gas. As another century dawns, perhaps we are entering into a new automotive age. Based on the tone and content of the passage, the author of the passage is most likely which of the following?
A.
An automotive engineer writing to his company management
B.
An enthusiast of automotive history writing to the editors of a car magazine
C.
A college engineering student writing to a car manufacturer
D.
A history professor writing to a television producer of historical documentaries
E.
An environmental activist writing to the editors of a newspaper
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参考答案:
举一反三
【多选题】必须实施见证取样和送检的试块、试件和材料有 ( ) 。
A.
用于承重结构的混凝土试块
B.
用于承重墙体的砌筑砂浆试块
C.
用于承重结构的钢筋及连接接头试件
D.
所有的水泥材料
E.
地下、屋面、厕浴间使用的防水材料
【单选题】QTZ80型起重机中,80表示:()。
A.
额定起重量
B.
最大幅度
C.
额定起重矩
D.
最大起升高度
【单选题】马克思主义认为世界在本质上是( )
A.
多样性的物质统一
B.
各种实物的总和
C.
物质和精神的统一
D.
主体和客观的统一
【判断题】对于不同厂家的QTZ80塔式起重机平衡重的安装位置、安装顺序以及安装重量都一致。( )
A.
正确
B.
错误
【判断题】对于不同厂家的QTZ80塔式起重机安装顺序基本一致。( )
A.
正确
B.
错误
【单选题】马克思主义哲学认为世界 的 本质是:
A.
思维和存在的统一
B.
各种实物的总和
C.
主体和客体的统一
D.
多样性的物质统一
【简答题】QTZ80 :
【判断题】QTZ80表示自升式塔式起重机,最大起重量为80kN。()
A.
正确
B.
错误
【简答题】见证取样送样的范围要求那些试块、试件和材料必须实施见证取样和送检:
【多选题】必须实施见证取样和送检的试块、试件和材料的有( ) 。
A.
用于承重结构的混凝土试块
B.
用于承重墙体的砌筑砂浆试块
C.
用于承重 结构 的钢筋及连接头试件
D.
所有 的 水泥材料
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