ZD120A型牵引电动机的主极铁心与定子磁轭冲制成分体铁心冲片极靴

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问题判断题

ZD120A型牵引电动机的主极铁心与定子磁轭冲制成分体铁心冲片极靴部分有8个向心半闭口补偿槽，用以安装补偿绕组。

答案

参考答案：错

选择题

There were about six _______ students in the school building during the earthquake,

and _______ of them didn't run out. [ ]

A. hundred, two third

B. hundred, two thirds

C. hundreds, two thirds

D. hundreds, two third

填空题

凸版印刷俗称（），平版印刷俗称（）。