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【简答题】
在 “研究电磁感应现象”的实验中,首先按右图接线,以查明电流表指针的偏转方向与电流方向之间的关系;当闭合 S 时 ,观察到电流表指针向左偏,不通电时电流表指针停在正中央.然后按右图所示将电流表与副线圈 B 连 成一个闭合回路 ,将原线圈 A 、电池、滑动变阻器和电键 S 串联成另一个闭合电路 ( 1 ) S 闭合后 ,将螺线管 A (原线圈)插入螺线管 B (副线圈)的过程中,电流表的指针将如何偏转?( 2 )线圈 A 放在 B 中不动时 ,指针如何偏转?( 3 )线圈 A 放在 B 中不动 ,将滑动变阻器的滑片 P 向左滑动时 ,电流表指针将如何偏转?( 4 )线圈 A 放在 B 中不动 ,突然断开 S .电流表指针将如何偏转?
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C.
There is a small positive relationship between the two variables.
D.
Actually, there is no relationship between the two variables.
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droplets
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the absolute version of purchasing power parity holds in the short run.
B.
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D.
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interrogative
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interactive
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拆借利率
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【单选题】There is more empirical evidence in the literature to suggest that:
A.
the absolute version of purchasing power parity holds in the short run.
B.
the relative version of purchasing power parity holds in the short run.
C.
the absolute version of purchasing power parity holds in the long run.
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interactive
C.
international
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