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【单选题】
哈夫曼树的带权路径长度是( )A．所有结点权值之和 B．所有叶结点带权路径长度之和C．带权结点的值 D．除根以外所有结点权值之和
A.
A
B.
B
C.
C
D.
D
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【单选题】My book is blue. _____ is blue, too.
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【判断题】含有第二类间断点的函数可能存在原函数,也可能不存在原函数
A.
正确
B.
错误
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【单选题】在 Excel2010 中,如果单元格中的数太长不能显示时,会有一组( )显示在单元格内。
A.
*
B.
？
C.
$
D.
#
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【简答题】牵引变电所根据其设置场所和结构形式可分为( )牵引变电所、( )牵引变电所。
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【简答题】牵引变电所根据其设置场所和结构形式可分为地上牵引变电所和_______________。
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【简答题】Fill in the blanks with the proper forms of the words or phrases given below. afford, rock bottom price, in view of, stick to, superior to, prepare the sales contract, with a view to, in one's opinion...
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【单选题】My book is blue. _____ is blue, too.
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