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【判断题】
反馈控制系统又称为闭环控制系统。A.
正确
B.
错误
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举一反三
【单选题】It follows from the Fisher Effect that if the real interest rate is the same worldwide; any difference in interest rates between countries reflects differing expectations about ______.
A.
foreign exchange rates
B.
inflation rates
C.
unemployment rates
D.
GDP growth rates
【单选题】Suppose that 500 candy bars are demanded at a particular price. If the price of candy bars rises from that price by 10 percent, the number of candy bars demanded falls to 480. Using the midpoint appro...
A.
price elasticity of demand for candy bars in this price range is about 0.24
B.
price elasticity of demand for candy bars in this price range is about 0.41
C.
demand for candy bars in this price range is unit elastic
D.
price increase will decrease the total revenue of candy bar sellers
【判断题】It follows from the weak axiom of revealed preference that if a consumer chooses x when he could afford y and chooses y when he could afford x; then his income must have changed between the two observ...
A.
正确
B.
错误
【单选题】IT风险管理的过程中，查找漏洞的方式是多种多样的，漏洞分析会贯穿于系统的整个生命周期，以下描述错误的是( )。
A.
系统的开发阶段，漏洞的查找应当专注于企业的安全策略，安全操作程序，系统设备白皮书等关于安全和技术性能的文件
B.
系统实施过程中，漏洞分析应该扩展到更加详细的层面
C.
系统使用过程中，漏洞分析应该包括系统安全功能、安全控制、技术性和程序性的分析，这一环节是IT风险管理最为关键的环节
D.
漏洞分析完之后，需要进行系统安全测试，利用系统开发资金、合理的技术以及专家的经验对系统进行安全测试
【判断题】It follows from the weak axiom of revealed preference that if a consumer chooses x when he could afford y and chooses y when he could afford x , then his income must have changed between the two obser...
A.
正确
B.
错误
【单选题】Suppose that 50 ice cream cones are demanded at a particular price. If the price of ice cream cones rises from that price by 4 percent, the number of ice cream cones demanded falls to 46. Using the mi...
A.
demand for ice cream cones in this price range is elastic.
B.
demand for ice cream cones in this price range is inelastic.
C.
demand for ice cream cones in this price range is unit elastic.
D.
price elasticity of demand for ice cream cones in this price range is 0.
【简答题】It therefore follows from the evidence presented here that sporting practices are not a unique, socially isolated sphere and____________do bear a relation to the social construction of masculine ideal...
【单选题】When the value of the euro changes from $1.30 to $1.20, it follows that:
A.
European Union imports from the United States increase.
B.
U.S. exports to the European Union increase.
C.
U.S. imports from the European Union increase.
D.
European Union exports to the United States decrease.
【单选题】10~11共用题干 男,33岁。间歇性上腹痛3年,伴嗳气、反酸。近3天来上腹痛加剧,一天来解柏油样便4次,今晨晕倒,急送入院。查体,脉搏128次/分,血压78/50mmHg,该患者应采取的体位是
A.
平卧位，下肢抬高
B.
平卧位，头部抬高
C.
左侧卧位
D.
右侧卧位
E.
半坐位
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