Ubuntu中，开启root账户的方法( )

[填空题] 英译中（Translate）：root pressure（）

[名词解释] root canal

[单选题]Catalyst 6500 (Catalyst OS系统)中设置主root的命令格式是______。A.spanning£­tree lan rC．atalyst 6500 (Catalyst OS系统)中设置主root的命令格式是______。A．spanning-tree lan ＜vans＞ root primaryB．spanning-tree lan ＜vans＞ root secondaryC．set spantree root ＜vans＞D．set spantree root

[单选题]在linux系统下，忘记了root密码，可以到（）模式下修改找回root密码。A . 单用户模式B . 后台模式C . 多用户模式D . 命令模式

[单选题]If the square root of t is a real number, is the square root of t positive?(1) t＞0(2) t2＞0

[单选题]Travelers now believe that the root cause for failures of British railway is[A] its structural design.[B] the pursuit of profit.[C] its inefficient network.[D] the lack of safety guarantees.

[单选题]In the word \"interchangeable\",the root is ___________.A.interB.interchang

[单选题]C．atalyst 6500(Catalyst OS系统)中设置主root的命令格式是——。A．spanning-tree vlan<vlans>root primaryB．spanning-tree vlan<vlans>root secondaryC．set spantree root<vlans>D．set spantree root secondary<vlans>

[单选题]酒水服务时，香槟酒的开启方法与其他酒的开启方法（）A . 可同可不同B . 相同C . 不同D . 大致相同

[判断题] MST中，MST区域的CIST Regional Root是本区域的IST中拥有最优交换机标识的交换机。（）A . 正确B . 错误

[单选题]The love of moneyis the [root] of all evil.A.resultB.endC.forceD.cause