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【判断题】
洋兰的市场主栽品种多从国外引进,但其原种可能产自中国。A.
正确
B.
错误
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举一反三
【单选题】Economic expansions in Germany and Japan would cause
A.
the U.S. price level and real GDP to rise.
B.
the U.S. price level and real GDP to fall.
C.
the U.S. price level to rise and real GDP to fall.
D.
the U.S. price level to fall and real GDP to rise.
【单选题】Short-run contractions and expansions in economic activity are called
A.
recessions.
B.
expansions.
C.
deficits.
D.
the business cycle.
【单选题】Which of the following best describes a typical business cycle?
A.
Economic expansions are followed by economic contractions.
B.
Inflation is followed by unemployment
C.
Trade surpluses are followed by trade deficits
D.
Stagflation is followed by inflationary economic growth
【简答题】（12分）某学习小组为证明并观察铜与稀HNO 3 反应的产物是NO，设计了如下图所示的实验装置。请你根据他们的思路，回答有关的问题。 （一）实验仪器：大试管、玻璃导管、橡皮塞、烧杯、棉花、注射器。 （二）实验药品：铜丝、稀硝酸、碳酸钙颗粒、烧碱溶液。 （三）实验原理： 铜与稀硝酸反应的离子反应方程式 ① 。 （四）实验步骤： 1、按右图所示连接好装置，检验装置的 ② ； 2、向试管中加入一定量的固...
【单选题】The alternation between recessions and expansions is known as the:
A.
. unemployment rate.
B.
. long-run economic growth.
C.
. business cycle.
D.
. macroeconomy.
【简答题】一画院由A公司总承包承建，机电工程分包给B公司施工，机电工程包括风管的制作和安装、内外景观照明布置、升降机和自动扶梯开通运行、饮用水不锈钢管路连通、中水系统处理回收利用、污水管网接通入网、气体灭火和水喷淋系统有效戒备、安全防范系统警戒正常等。工程按合同约定如期完成，A公司组织B公司对建筑工程和安装工程进行自检，整改合格并做好准备后，向业主申请办理竣工验收手续，验收合格，画院正式对外开放启用。 问题...
【单选题】Sustained downward movements in the business cycle are referred to as
A.
inflation.
B.
recessions.
C.
economic recoveries.
D.
expansions.
【单选题】Credit spreads are most likely to narrow during
A.
economic contractions
B.
a period of flight to quality
C.
economic expansions
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