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【简答题】
三相对称绕组中，通入三相不对称交流电流其合成磁势为（）；单相绕组中，通入单相交流电流其磁势为（）；两相对称绕组（）中，通入两相对称交流电流（）其合成磁势为（）
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举一反三
【单选题】He was a much older tennis player but he had the great advantage of experience.
A.
strong point
B.
weak point
C.
disadvantage
D.
shortcoming
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【简答题】下图表示人体细胞通过内环境与外界环境进行物质交换的过程。 A 、 B 、 C 、 D 表示 4 种器官,请根据图回答: (1) 血液在 A( 即 ________) 内进行气体交换,以得到 O 2 ,排出 CO 2 ,该过程是通过 ________ 作用进行的。 (2)B( 即 ____________) 内的营养物质,通过 __________ 、 __________ 等过程进入循环系统。 (...
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【单选题】He had studied Spanish, and had grown up in New York City--the most culturally _________ place in America.
A.
conspicuous
B.
diverse
C.
obscure
D.
dizzy
【单选题】PASSAGE TWO (1)Paul was dissatisfied with himself and with everything. The deepest of his love belonged to his mother. When he felt he had hurt her, or wounded his love for her, he could not bear it. ...
A.
indifferent
B.
desperate
C.
pessimistic
D.
ambiguous
【单选题】Passage two ( 1 ) PAUL was dissatisfied with himself and with everything. The deepest of his love belonged to his mother. When he felt he had hurt her, or wounded his love for her, he could not bear i...
A.
. indifferent
B.
. desperate
C.
pessimistic
D.
ambiguous
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