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问题 单项选择题

在下列症状中，哪项不符合脾肺气虚的临床表现

A．咳喘短气，痰稀色白

B．胸闷，善太息

C．食欲不振，腹胀便溏

D．倦怠乏力，少气懒言

E．舌质淡，苔白，脉弱

答案

参考答案：B

解析：脾肺气虚证，是脾肺两脏气虚的证候。多由久病咳喘，肺虚及脾，或饮食不节、劳倦伤脾，不能向上散精于肺所致，临床表现是久咳不止，气短而喘，痰多稀白，食欲不振，腹胀便溏，声低懒言，疲倦乏力，面色咣白，甚则面浮足肿。舌淡苔白，脉细弱。脾肺气虚证，主要以咳喘，纳少，腹胀便溏与气虚证共见为审证要点。

问答题

The American economic system is organized around a basically private-enterprise, market-oriented economy in which consumers largely determine what shall be produced by spending their money in the marketplace for those goods and services that they want most. Private businessmen, striving to make profits, produce these goods and services in competition with other businessmen; and the profit motive, operating under competitive pressures, largely determines how these goods and services are produced. (47)Thus, in the American economic system it is the demand of individual consumers, coupled with the desire of businessmen to maximize profits and the desire of individuals to maximize their incomes that together determine what shall be produced and how resources are used to produce it.
(48)An important factor in a market-oriented economy is the mechanism by which consumer demands can be expressed and responded to by producers. In the American economy, this mechanism is provided by a price system, a process in which prices rise and fall in response to relative demands of consumers and supplies offered by seller-producers. If the product is in short supply relative to the demand, the price will be bid up and some consumers will be eliminated from the market. (49)If, on the other hand, producing more of a commodity results in reducing its cost, this will tend to increase the supply offered by seller-producers, which in turn will lower the price and permit more consumers to buy the product. Thus, price is the regulating mechanism in the American economic system.
The important factor in a private-enterprise economy is that individuals are allowed to own productive resources (private property), and they are permitted to hire labor, gain control over natural resources, and produce goods and services for sale at a profit. (50)In the American economy, the concept of private property embraces not only the ownership of productive resources but also certain rights, including the right to determine the price of a product or to make a free contract with another private individual.
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单项选择题

在高压电气设备上发生的事故，这种事故不仅对人体造成内部伤害，其产生的（）还会烧伤人体。

A、高温电弧

B、低温电弧

C、高压电弧

D、低压电弧
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