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单项选择题
在正弦交流电路中表示阻抗电压电流的关系是（）
A.I=U/Z
B．I=Um/Z
C．Um/根号2Z
D．i=
B．I=Um/Z
C．Um/根号2Z
D．i=
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问答题
Kissinger concludes that successful international systems appear to have an inevitable symmetry. Therefore the emerging new world order proposed by the U.S. has to be built by representing vastly different cultures.
Kissinger concludes that successful international systems appear to have an inevitable symmetry. Therefore the emerging new world order proposed by the U.S. has to be built by representing vastly different cultures.
A.S.
答案：
B. False基辛格认为成功的国际体系似乎具有一种不可避免的对称性。因此，美国提出的新兴世界秩序必须通过代表截然不同的...
