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【单选题】
一台变比为K=10的变压器,从高压侧作短路实验,求得短路阻抗为40欧姆,那末折算到低压边的短路阻抗是()欧姆。A.
4
B.
400
C.
0.4
D.
40
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举一反三
【简答题】按网络的所有权可分为 ________、________。
【单选题】According to the passage, where can you see the remains of ancient mountains?
A.
Pacific Northwest.
B.
Wisconsin.
C.
Japan.
D.
Eastern North America.
【简答题】Since the 1940s, southern California has had a reputation for smog. Things are not as bad as they once were but, according to the American Lung Association, Los Angeles is still the worst city in the ...
【简答题】为调高作物品种的产量潜力,育种工作者需要关注那四个方面的问题?
【简答题】Since the 1940s, southern California has had a reputation for smog. Things are not as bad as they once were but, according to the American Lung Association, Los Angeles is still the worst city in the ...
【单选题】刘禹锡的诗句 “芳林新叶催陈叶,流水前波让后波” 歌颂的是 ( )
A.
自我革新的担当精神
B.
坚强不屈的英雄气概
C.
良好的创新创业环境
D.
筚路蓝缕的奋斗精神
【简答题】Since the 1940s, southern California has had a reputation for smog. Things are not as bad as they once were but, according to the American Lung Association, Los Angeles is still the worst city in the ...
【简答题】Since the 1940s , southern California has had a reputation for smog 。 Things are not as bad as they once were but , according to the American Lung Association , Los Angeles is still the worst city in ...
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