Although the visit he paid to the country was (for

Although the visit he paid to the country was (formal), he thought it was quite

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教育测量的三要素是( )A.测量目的、测量对象、测量结果B.测量对象、测量主试、测量工具C.

教育测量的三要素是( )A.测量目的、测量对象、测量结果B.测量对象、测量主试、测量工具C.测量对象、测量工具、测量结果D.测量目的、测量方法、测量对象

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8[多选题,10分] 圆轴扭转时,关于横截面上的应力下列哪些说法是正确的?( )

8[多选题,10分] 圆轴扭转时,关于横截面上的应力下列哪些说法是正确的?( )A A.圆心处的剪应力为最大B B.园心处的剪应力为零C C.圆周处的剪应力为零

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楼梯一般由____ ____ ______扶手三部分组成

楼梯一般由____ ____ ______扶手三部分组成

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My absent-minded teacher loses his keys, his book

My absent-minded teacher loses his keys, his book and his chalk almost every day

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