以下删除Hive中分区的HiveQL语句哪个是正确的 A: A：ALTER TABLE t_log DROP IF EXISTS PARTITION(year = 2013); B: B：ALTER TABLE t_log DROP IF EXISTS PARTITION(2013); C: C：ALTER TABLE t_log DELETE PARTITION(year = 2013); D: D：ALTER TABLE t_log DELETE PARTITION(2013); E: 第一章 大数据基础知识

以下哪个HiveQL语句是Hive中用来添加分区数据的 A: A：add table t_log partition(2013) location '/logs/2013'; B: B：add table t_log partition(year==2013) location '/logs/2013'; C: C：alter table t_log add partition(2013) location '/logs/2013'; D: D：alter table t_log add partition(year==2013) location '/logs/2013'; E: 第一章 大数据基础知识

选择下列函数运行后的输出NestList[Log,10,3] A: {Log[10],Log[Log[10]],Log[Log[Log[10]]]} B: {10,Log[10],Log[Log[10]],10+Log[Log[Log[10]]]} C: {Log[10],Log[Log[10]],Log[Log[Log[Log[10]]]]} D: {10,Log[10],Log[Log[10]],Log[Log[Log[10]]]}

If an algorithm has running time $T(n)= O(n\log n)$, then $T(n)$ may most likely satisfy that _____. A: $T(n) = 4T(n/4) + O(n^2)$ B: $T(n) = 4T(n/4) + O(n) $ C: $T(n) = 3T(n/2)+O(n) $ D: $T(n) = 2T(n/2) + O(\log n)$

An algorithm has running time $T(n)$, which satisfies $T(n) = 4T(n/4) + O(n)$.So, its running time is _____. A: $O(n\log n)$ B: $O(n)$ C: $O(n^2)$ D: $O(n^2\log n)$

某递归算法的递归关系式为T（ n ） = 2*T（n/2） + O（ n ），那么它所对应的时间复杂度为。 A: O(n^2) B: O(log n) C: O(n) D: O(n*log n)

CentOS操作系统的日志文件默认保存在哪个路径（） A: /etc/log B: /var/log C: /usr/log D: /log

求不定积分[img=115x46]17da65382f8e1b9.png[/img]； （ ） A: x - (5*log(x + 1))/4 - (3*log(x - 3)) B: (5*log(x + 1))/4 - (3*log(x - 3)) C: x - (5*log(x + 1))/4 - (3*log(x - 3))/4 D: (5*log(x + 1))/4 - (3*log(x - 3))/4

What is the default filename for the component trace file?（） A: CiscoMIV B: log  C: CiscoMAD D: log  E: CiscoMED F: log  G: CiscoMCV H: log

A seaman leaves a vessel before it sails from a foreign port.He informs the Chief Officer that he won't return.After the vessel sails,the Chief Officer finds the seaman's work clothes in his locker.How should the Master handle this matter ________. A: Log the seaman as a deserte B: Log the seaman as a fail to join C: Log the seaman for misconduct D: Take no action