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问题 单项选择题

阿托品抗休克的主要机制是( )。

A．心率加快，增加心排血量

B．扩张血管，改善微循环

C．扩张支气管，降低气道阻力

D．兴奋中枢神经，改善呼吸

E．收缩血管，升高血压

答案

参考答案：B

解析：[知识点] M胆碱受体阻断药 阿托品的作用机制

单项选择题

调压器的过滤器接口应定期进行严密性检查、前后压差检查、排污及（）等。

A、其合格证

B、检验合格证

C、泄漏

D、清洗
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单项选择题

In science the meaning of the word "explain" suffers with civilization’s every step in search of reality. Science cannot really explain electricity, magnetism, and gravitation; their effects can be measured and predicted, but of their mature no more is known to the modem scientist than to Thales who first speculated on the electrification of amber. Most contemporary physicists reject the notion that man can ever discover what these mysterious forces "really" are. "Electricity," Bertrand Russell says, "is not a thing, like St. Paul’s Cathedral: it is a way in which things behave. When we have told how things behave when they are electrified, we have told all there is to tell." Until recently scientists would have disapproved of such an idea. Aristotle, for example, whose natural science dominated Western thought for two thousand years, believed that man could arrive at an understanding of reality by reasoning from self-evident principles. He felt, for example, that it is a self-evident principle that everything in the universe has its proper place, hence one can deduce that objects fall to the ground because that’s where they belong, and smoke goes up because that’s where it belongs. The goal of Aristotelian science was to explain why things happen. Modem science was born when Galileo began trying to explain how things happen and thus originated the method of controlled experiment which now forms the basis of scientific investigation.

Which of the following principles most influenced scientific thought for two thousand years

A．The speculations of Thales.

B．The forces of electricity, magnetism, and gravity.

C．Aristotle’s natural science.

D．Galileo’s discoveries.
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