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【单选题】
历史上最早出现的货币形式是A.
实物货币
B.
信用货币
C.
代用货币
D.
电子货币
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反馈参考答案：
举一反三
【简答题】3-3 如图所示的有向图,选网孔作为独立回路,列出独立的KVL方程。
【简答题】Tobacco is the second major cause of death in the world. It is responsible for the death of one in ten s worldwide (about 5 million deaths each year). If current smoking patterns continue, it wil...
【多选题】社会主义初级阶段理论提出的意义是( )。
A.
是马克思主义关于社会主义发展阶段的新论断
B.
是党制定和执行正确路线、方针、政策的基本依据
C.
是防止和反对“左”和右的错误的思想武器
D.
是中国特色社会主义事业不断前进的保证
E.
是我国走出一条建设中国特色社会主义新道路的基础
【单选题】--Don’t you think that was a ______ night? --Yes, we were almost ______ to death by the shaking of the earth.
A.
frightened; frightened
B.
frightening; frightening
C.
frightening; frightened
D.
frightened; frightening
【单选题】如图所示电路abda回路中,设定顺时针为绕行方向,则正确的KVL方程为( )
A.
I1R1+I3R3-V1=0
B.
R1+R3-V1=0
C.
I1R1+I3R3+V1=0
D.
I1R1-I3R3-V1=0
【单选题】What Is Death? People in the past did not question the difference between life and death. They could see that a person died when his heart stopped beating. People have learned, however, that the body ...
A.
did not exist.
B.
was easy to tell.
C.
lay in the brain.
D.
was open to debate.
【单选题】在如图所示的电路中,假设绕行方向为逆时针方向,则可列出回路电压方程为( )
A.
I3R3 - E2 + I2R2 - I1R1 + E1 = 0
B.
I3R3 - E2 + I2R2 + I1R1 - E1 = 0
C.
-I3R3 + E1 - I1R1 + I2R2 + E2 = 0
D.
-I3R3 - E1 + I1R1 - I2R2 + E2 = 0
【单选题】如图所示电路中的bcdb回路中,以逆时针为绕行方向,正确的KVL方程为( )
A.
I2R2+I3R3+V2=0
B.
I2R2-I3R3+V2=0
C.
I2R2-I3R3-V2=0
D.
I2R2+I3R3=V2
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