以下关于机房接地系统要求的叙述中,不正确的是:( )。
机房接地系统的要求。
(1)网络及主机设备的电源应有独立的接地系统,并应符合相应的技术规定。
(2)分支电路的每一条回路都需有独立的接地线,并接至配电箱内与接地总线相连。
(3)配电箱与接地端应通过单独绝缘导线相连:其线径至少需与输入端、电源路径相同,接地电阻应小于4Ω 。
(4)接地线不可使用零线或以铁管代替。
( )is the process of transforming information so it is unintelligible to anyone but the intended recipient.
As each application module is completed,it undergoes( )to ensure that it operates correctly and reliably.
( )algorithm specifies the way to arrange data in a particular order.
After analyzing the source code,( )generates machine instructions that will carry out the meaning of the program at a later time.
( )can help organizations to better understand the information contained within the data and will also help identify the data that is most important to the business and future business decisions.
浏览器开启无痕浏览模式后,( )依然会被保存下来。
下列协议中,不属于TCP/IP协议簇的是( )。
下列传输介质中,带宽最宽、抗干扰能力最强的是( )。
数控编程常需要用参数来描述需要加工的零件的图形。在平面坐标系内,确定一个点需要2个独立的参数,确定一个正方形需要( )个独立的参数。
某书的页码为1,2,3,...,共用数字900个(一个多位数页码包含多个数字),据此可以推断,该书最大的页码为( )。