前序遍历序列与中序遍历序列相同的二叉树为 (1) ,前序遍历序列与后序遍历序列相同的二叉树为 (2) 。
(1)()
A.1
B.2
C.5
D.15
参考答案:C
连词成句。
1. for this me difficult book is
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2. do best newspaper like which you
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3. five he back minutes will in be
4. you pen you bought do where remember the
5. open I with window the sleep usually
各级人民政府应当优先采购什么产品?