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【多选题】
下列关于政府采购当事人的说法中正确的有（）。A.
政府采购的采购人拥有审查政府采购供应商资格的权利
B.
政府采购的供应商参加政府采购活动前三年内，在经营活动中没有重大违法记录
C.
政府采购一般代理机构的资格由国务院有关部门或省级人民政府有关部门认定，主要负责集中采购的代理业务
D.
政府采购代理机构负有依法发布采购信息的义务
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【单选题】主要用于网站自身或为第三方客户进行需求调查或收集用户反馈信息的网上单证是( )
A.
普通信息交流类网上单证
B.
信息发布系统网上单证
C.
身份注册类网上单证
D.
用户登录网上单证
【单选题】An example of an externality is the impact of
A.
bad weather on the income of farmers.
B.
the personal income tax on a person's ability to purchase goods and services.
C.
pollution from a factory on the health of people in the vicinity of the factory.
D.
increases in health care costs on the health of individuals in society.
【单选题】An externality is theimpact of
A.
society's decisions on the well-being of society.
B.
a person's actions on that person's well-being.
C.
one person's actions on the well-being of a bystander.
D.
society's decisions on the poorest person in the society.
【单选题】An externality is the impact of
A.
a. society's decisions on the well-being of society.
B.
b. a person's actions on that person's well-being.
C.
c. one person's actions on the well-being of a bystander.
D.
d. society's decisions on the poorest person in the society.
【单选题】An example of an externality is
A.
the impact of bad weather on the income of farmers.
B.
the impact of the personal income tax on a person’s ability to purchase goods and services.
C.
the impact of pollution from a factory on the health of people in the vicinity of the factory.
D.
the impact of increases in health care costs on the health of individuals in society.
【简答题】对于临界阻尼、过阻尼系统,一般将响应曲线从稳态值的 到 所需的时间称为上升时间tr。
【单选题】An externality is an example of
A.
a corrective tax
B.
a tradable pollution permit
C.
a market failure
D.
Both a and b are correct
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