【多选题】生产安全事故等级划分的主要因素有( )。
【单选题】建立 ARMA ( p , q ) 模型的主要步骤包括 ( ) 。 A .对原序列进行平稳性检验 ; B .通过计算自相关系数和偏自相关系数,来确定 ARMA 模型的阶数 q 和 p ; C .估计模型的未知参数 ; D .检验估计参数的显著性,以及模型本身的合理性 ; E .进行诊断分析,以证实所得模型确实与所观察到的数据特征相符 。
【单选题】For security reasons a network technician wants to install a Linux based email server, Microsoft web services, and directory services on different servers. Which of the following technologies would be...
【单选题】You are the network administrator for The network consists of a single Active Directory domain named . For security reasons,management decides that a particular user must not be able to log on to the ...
A.
In Active Directory Users and Computers, on the Sessions tab, configure the End Session setting for the user account. Instruct the user to log off from the domain and log on again.
B.
Modify the Default Domain Policy GPO to enforce logoff when logon hours expire. Ensure that the user's computer has the latest Group Policy settings applied.
C.
Remove the user's domain account from the local Administrators group on the user's client computer. Instruct the user to log off from the domain and log on again.
D.
Use Computer Management on the domain controller. Restart the Net Logon service.
【单选题】空腹静脉血浆葡萄糖正常值,目前采用的标准为
【单选题】当时间序列是非平稳的时候 ( ) 。 A .均值函数不再是常数 ; B .方差函数不再是常数 ; C .自协方差函数不再是常数 ; D .时间序列的统计规律随时间的位移而发生变化 ; E .不能直接建立 ARMA ( p, q ) 模型 。