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问题 单项选择题 A3型题

男，50岁，咳嗽，咳白色泡沫痰10年，每年持续4个月。近三年出现活动后气短，时有哮喘。体检：两肺叩诊高清音，呼吸音低，呼气延长

患者应诊断为（）

A.单纯型慢性支气管炎

B.支气管哮喘、肺气肿

C.喘息型慢性支气管炎

D.喘息型慢性支气管炎、肺气肿

E.单纯型慢性支气管炎、肺气肿

答案

参考答案：D

单项选择题

The process of gaining or losing weight can be explained by comparing your body to your car. Both run (51) fuel, food for your body and gasoline for your car. Both (52) that fuel, first into heat, then energy, some of (53) is used to do work, and some emitted as waste. And (54) your car uses more energy when the engine is racing than when it is idling, (55) does your body use more energy when you are working hard than (56) you are resting.

For the purpose of this comparison, (57) , there is one significant difference between them. Your car cannot store fuel by turning it into (58) else; all gasoline not (59) remains as gasoline. But your body stores (60) energy as fat. When the gas tank is completely empty, the car won’t run; but your body can burn fat to provide more energy.

60().

A.useless 

B.enough 

C.excess 

D.extensive
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单项选择题

混入空气对SF6绝缘强度的影响如何（）？

A.不影响

B.升高

C.降低

D.不确定
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