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【简答题】
根据使磁通量发生变化的方法不同,可将电磁感应分为二类,一类是磁场保持不变,导体回路或导体在磁场中运动,由此产生的电动势称作 ;另一类是导体回路不动,磁场发生变化,由此产生的电动势称为 。
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皮皮学刷刷变学霸
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【单选题】He has already been living in China for twenty years, so it's possible for him to see things from the ( ) of a Chinese.
A.
perspective
B.
prospective
C.
perceptive
D.
permissive
【单选题】—What’s your math teacher like? —_________.
A.
He’s twenty-seven years old
B.
He works in our school
C.
He’s creative and outgoing
D.
He likes physics and biology
【单选题】—What's your English teacher like? —______. [ ]
A.
He's twenty-seven years old
B.
He works in our school
C.
He's creative and outgoing
D.
He likes physics and biology
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