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【简答题】
线圈的电感是由线圈本身的特性决定的。线圈越( )单位长度上的匝数越( )截面积越( ),电感就越大。 两个线圈的一对( )端相接,称为顺串, 这时两个线圈的磁通方向是相( ) 的。串接后的等效电感为( )。
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举一反三
【单选题】Why does the author mention the Biograph Company?
A.
To identify the most successful company in the film industry at the time.
B.
To describe an exception to a trend in film exhibition in the early 1900s.
C.
To discuss the first addition of films to traditional entertainment programs.
D.
To illustrate the model on which most other small film companies were based.
【单选题】This biograph gave a ________ discription of her childhood.
A.
distorting
B.
distort
C.
distorted
D.
distorts
【单选题】Past heroes and heroines seem to be nobler than those of today according to their biographies.
A.
Y
B.
N
C.
NG
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