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【判断题】
异步电动机的转子转速n总是略大于旋转磁场的同步转速n 1 ，即与旋转磁场“异步”地转动，这是这种电机称为“异步”电动机的原因。A.
正确
B.
错误
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举一反三
【单选题】In those days she was always so lost in thought that she had to be called two or three times ______ she came to her dinner.
A.
until
B.
after
C.
when
D.
before
【简答题】In those days she was always lost in thought．so that she had to be called three or four times＿＿＿she came to her dinner．
【单选题】上海别称为 “ 申 ” ,与战国时期春申君 () 有关系
A.
黄歇
B.
田文
C.
赵胜 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
D.
魏无忌
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