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

游客2023-07-16  14

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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