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【单选题】
Two long parallel wires are placed side - by - side on a horizontal table. If the wires carry current in opposite directions,A.
both wires are lifted slightly
B.
both wires are forced against the table's surface
C.
the wires attract each other
D.
the wires repel each other
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A.
Those who like the same things that you do.
B.
Those who you can argue and not lose your temper.
C.
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D.
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B.
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D.
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E.
皮肤过敏反应
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