2. 职称英语
  3. Why does the author mention the discovery of air pressure? [br] According to the

Why does the author mention the discovery of air pressure? [br] According to the

游客2023-07-16  58
问题 Why does the author mention the discovery of air pressure? [br] According to the passage, which of the following is not true?
选项 A、Galileo did not solve the problem of the water-pump.
B、When a scientist tries to establish a scientific law, he must collect much information.
C、An original hypothesis is not always accepted.
D、Using a good vacuum pump, it is possible to raise water from the bottom of a building to the roof 50 feet above.
答案 D
解析
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