命令“grep&39;root&39;/var/log/secure”的作用是（）
A. 在/var/log/ secure文件中搜索并显示带有字符串“root”
B. 在/var/log/ secure目录下搜索 owner为 root的文件
C. 将/var/log/ secure文件的owner设置为 root
D. 以root用户的权限打开并显示/var/log/ secure文件的内容
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命令“grep&39;root&39;/var/log/secure”的作用是（）
A.在/var/log/ secure文件中搜索并显示带有字符串“root” B.在/var/log/ secure目录下搜索 owner为 root的文件 C.将/var/log/ secure文件的owner设置为 root D.以root用户的权限打开并显示/var/log/ secure文件的内容
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You have table 'apps','userdata' on server that uses MyISAM storage engine. You want to transfer this data to server but use InnoDB engine instead. You execute the following commands: ServerB commands: Shell＞ mysqldump –u root –h server –no-data apps userdata | mysql –u root –p apps Shell＞ mysql –u root –p –h server –e 'ALTER TABLE 'apps','userdata' ENGINE=InnoDB;' Shell＞ mysqldump –u root –p –h server –no-create-info –order-by-primary apps userdata | mysql –u root –p apps What effect does the – order-by-primary argument have on the mysqldump command?（）
A.It exports tables with the most indexes first to assist with import speeds B.It ensures that unique indexes have no conflicts when the data is dumped C.It orders by primary key to assist in speeding up importing to InnoDB tables D.It must be specified so index data is dumped correctly when –on-create-info is used
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You have table 'apps','userdata' on server that uses MyISAM storage engine. You want to transfer this data to server but use InnoDB engine instead. You execute the following commands: ServerB commands: Shell＞ mysqldump –u root –h server –no-data apps userdata | mysql –u root –p apps Shell＞ mysql –u root –p –h server –e 'ALTER TABLE 'apps','userdata' ENGINE=InnoDB;' Shell＞ mysqldump –u root –p –h server –no-create-info –order-by-primary apps userdata | mysql –u root –p apps What effect does the – order-by-primary argument have on the mysqldump command?（）
A.It exports tables with the most indexes first to assist with import speeds B.It ensures that unique indexes have no conflicts when the data is dumped C.It orders by primary key to assist in speeding up importing to InnoDB tables D.It must be specified so index data is dumped correctly when –on-create-info is used
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运行命令print（&39;3&39;,&39;+&39;,&39;3&39;）后的运行结果是？（）
A.6 B.33 C.3+3 D.3+3
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执行以下命令之后，dic的值是dic={&39;小张&39;:95,&39;木子&39;:85,&39;小虎&39;:80,&39;陈怡&39;:75,&39;朝朝&39;:66}dic[&39;倩倩&39;]=88deldic[&39;木子&39;]（）
A.{小张: 95, 木子: 85, 小虎: 80, 陈怡: 75, 朝朝: 66, 倩倩: 88} B.{小张: 95, 小虎: 80, 陈怡: 75, 朝朝: 66} C.{小张: 95, 小虎: 80, 陈怡: 75, 朝朝: 66, 倩倩: 88} D.以上都不是
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执行以下命令之后，dic的值是什么？dic={&39;1&39;:95,&39;2&39;:85,&39;3&39;:80,&39;4&39;:75,&39;5&39;:66}dic[&39;6&39;]=88（）
A.{1: 95, 2: 85, 3: 80, 4: 75, 5: 66} B.{1: 95, 2: 85, 3: 80, 4: 75, 5: 66, 6,88} C.{1: 95, 2: 85, 3: 80, 4: 75, 5: 66, 6: 88} D.以上都不是
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在Word中，&39;复制&39;和&39;剪切&39;命令只有在选定对象才可以使用（）
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You install a copy of Mysql 5.6.13 on a brand new Linux server by using RPM packages. The server starts successfully as verified by the following commands: $ pidof mysqld 3132 $tail – n2 /var/lib.mysql/hostname.err 2013-08-18 08:18:38 3132 [Note] /usr/sbin/mysqld:ready for connections. Version: '5.6.13-enterprise-commercial-advaced' socket:'/tmp/mysql.sock' port; 3306 Mysql Enterprise Server – Advanced Edition (Commercial) You attempt to log in as the root user with the following command: $mysql – u root ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO) Which statement is true about this scenario?（）
A.The RPM installation script sets a default password of password for new installations B.The local root user must log in with a blank password initially: mysql –u root –p C.New security measures mean that the mysql_secure_installation script must be run first on all new installations D.The mysql_install_bd post-installation script used – random-password
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在对文本进行各种编辑和操作时，OffiC2000文档中，提供了一个非常有用的&39;撤消&39;命令。执行&39;撤消&39;命令可以撤消操作（）
A.所有指令 B.部分指令 C.上一次 D.下一次
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运行命令input（&39;11&39;），从键盘输入66后，返回值是？（）
A.66 B.66 C.11 D.11
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在grep命令中，有*这个通配符。（）
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