题目内容：
在深度为7的满二叉树中，叶子结点的个数为（ ）
A．32 B．31
C．64
D．63
参考答案：
答案解析：
单选题：在深度为7的满二叉树中，叶子结点的个数为（ ）
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- 题目类型：单选题
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B．31
C．64
D．63
B．31
C．64
D．63
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China has got a good for fighting against the flu with its c
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