A heavy,thick-walled tube,usually steel,used between the drill pipe and the bit in the drill stem to weight the bit in order to improve its performance is called a().
A. heavy-walled drill pipe
B. tool joint
C. down hole tool
D. drill collar
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高速切削一般采用()。
A. 高的切削速度
B. 较快的进给速度
C. 小的径向和轴向切削深度
D. 大的径向和轴向切削深度
E. 较小的进给量
Your network consists of a single Active Directory domain named Contoso.com. You have a server named Server1 that runs Windows Server 2003 Service Pack 2 (SP2). You have two domain user accounts named Admin1 and User1. Admin1 is a member of the Administrators group on Server1. User1 is a member of the Domain Users group only. You log on to Server1 as User1. You need to run several administrative tools. You must minimize the number of times you are prompted to enter a username and password when starting the tools. You must achieve this goal without logging off from Server1. What should you do?()
A. Configure the secondary logon service to start by using the Admin1 account.
B. Configure the Start menu shortcut for each administrative tool to run as Admin1.
Create a Start menu shortcut for cmd.exe to run as Admin1, and then start the administrative tools from the command prompt.
D. Configure the Start menu shortcut for each administrative tool, and assign the Admin1 account ownership of the shortcuts.
计算机网络的基本功能包括任务调度和设备管理。
A. 正确
B. 错误