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【单选题】
What's the return value for a failed search in a B-tree of order 4?B树查找算法若最终失败，返回值为：A.
None
B.
NULL
C.
A pointer to the last examined node 指向最后一个所查找节点的指针
D.
A pointer to the root 指向根节点的指针
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收藏参考答案：
举一反三
【单选题】What's the height of a B-tree of order 128 relative to a corresponding BBST?若B树的阶m=128，则它的高度大致是对应的BBST的：
A.
1/5
B.
1/6
C.
1/7
D.
1/8
【单选题】$a_1=\sqrt{2},a_2=\sqrt{2+\sqrt{2}},\dots,a_n=\sqrt{2+a_{n-1}}$当$n \rightarrow \infty$时极限
A.
存在
B.
不存在
【单选题】设随机变量\( X \)服从区间（0,2）上的均匀分布，则\(P(X^2>2) \)=（）
A.
$\sqrt2/2$
B.
$\sqrt2$
C.
$1-\sqrt2/2$
D.
$1-\sqrt2$
【单选题】Which of the following is NOT the reason why she does not like to take photos with the camera?
A.
It was easy to break
B.
It was too heavy
C.
it is easy to get stolen
D.
it is too expensive
相关题目：
【单选题】What's the height of a B-tree of order 128 relative to a corresponding BBST?若B树的阶m=128，则它的高度大致是对应的BBST的：
A.
1/5
B.
1/6
C.
1/7
D.
1/8
【单选题】$a_1=\sqrt{2},a_2=\sqrt{2+\sqrt{2}},\dots,a_n=\sqrt{2+a_{n-1}}$当$n \rightarrow \infty$时极限
A.
存在
B.
不存在
【单选题】设随机变量\( X \)服从区间（0,2）上的均匀分布，则\(P(X^2>2) \)=（）
A.
$\sqrt2/2$
B.
$\sqrt2$
C.
$1-\sqrt2/2$
D.
$1-\sqrt2$
【单选题】Which of the following is NOT the reason why she does not like to take photos with the camera?
A.
It was easy to break
B.
It was too heavy
C.
it is easy to get stolen
D.
it is too expensive
参考解析：
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