未知题型
下列哪些rRNA是在核仁内形成的?( )
- A.18SrRNA
B．5SrRNA
C．28SrRNA
D．5．8SrRNA
E．16SrRNA
【参考答案】
A,C,D
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单项选择题
根据下列文章,请回答 23～30 题。 Ford 1 Ford’s great strength was the manufacturing process——not invention. Long before he stoned a car company，he was a worker. known for picking up pieces of metal and wire and turning them into machines. He started putting cars together in 1891'.Although it was by no means the first popular automobile，the Model T showed the world just how creative Ford was at combining technology and market.2 The company’s assembly line alone threw America’s Industrial Revolution into overdrive（高速运转）。Instead of having workers put together the entire car，Ford’s friends，Who were great toolmakers from Scotland. Organized teams that added parts to each Model T as it moved down a line. By the time Ford's Highland Park plant was humming（嗡嗡作响）along in 191 4，the world's first automatic conveyor belt could turn out a car every 93 minutes.3 The same year Henry Ford shocked the world with the$5.a.day minimum wage scheme，the greatest contribution he had ever made. The average wage in tile auto industry then was$2.34 for a 9-hour shift. Ford not only doubled that. he also took an hour off the workday. In those years it was unthinkable that a man could be paid that much，f0.r doing something that didn't involve an awful lot of training or education. The Wall Street Journal called the plan” an economic crime'，and critics everywhere laughed atF0rd.4 But as the wage increased later to daily$10，it proved a critical component of Ford’s dream to make the automobile accessible（可及的）to all. The critics were too stupid to understand that because Ford had lowered his costs per car，the higher wages didn't matter——except for making it possible for more people to buy cars. 第 23 题 Paragraph l____________
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2
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D.a.day
E.34
F.r
G.
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未知题型
参加维系蛋白质的三级结构的有( )。
A.氢键
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C．离子键
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未知题型
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