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【单选题】
电网中串联电抗器的作用之一是（）。A.
限制短路电流
B.
限制过电压
C.
补偿容性电流
D.
补偿无功
手机使用
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复制链接
新浪微博
分享QQ
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举一反三
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【简答题】补全对话。 A. You must have a good time. B. You helped clean up the city park. C. It's a mixture of fun and work. D. Some picked up the waste paper and plastic bags. E. You helped cheer up sick people. F. ...
【简答题】听音选出你听到的单词。 ( ) 1. A. old ( ) 2. A. six ( ) 3. A. how ( ) 4. A. name B. you B. ten B. are B. your C. year C. two C. am C. you
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