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【判断题】
一个线性含源二端网络,测得其开路电压为40V,短路电流为10A,当外接4Ω负载电阻时,负载电流为 5A。A.
正确
B.
错误
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举一反三
【单选题】When people specialize in the activity in which they have a comparative advantage,
A.
there cannot be a division of labor, though production will increase.
B.
there will likely be a division of labor as well as an increase in output.
C.
there will be a gain from trade, but production will not be increased.
D.
there will likely be a division of labor, and output will stay the same.
【简答题】“”科学构想首先在( )得以实现。
【判断题】A comparative advantage exists when a country can produce something more cheaply and/or of higher quality than any other country.
A.
正确
B.
错误
【判断题】When countries specialize in production in which they have a comparative advantage, more goods and services can be produced and consumed.
A.
正确
B.
错误
【单选题】患者，女，25岁。1型糖尿病，病程3余年，使用胰岛素治疗。近两日出现恶心、呕吐，不能正常进食，突然发生昏迷，测血糖3.3mmol/L。考虑为
A.
低血糖昏迷
B.
糖尿病酮症酸中毒
C.
糖尿病肾病尿毒症昏迷
D.
高渗非酮症糖尿病昏迷
E.
乳酸性酸中毒
【简答题】U202 Grammar -- AS When it is used as a conjunction, AS can mean A) when / while, B) though / although, C) since / because, D) in the way / mannar that, etc., and it can also be E) used in a comparat...
【单选题】When each person specializes in producing the good in which he or she has a comparative advantage, total production in the economy
A.
falls.
B.
stays the same.
C.
rises.
D.
may fall, rise, or stay the same.
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