题目内容
当保护套管与管壁垂直成45℃安装时，保护套管的端面应处于管道中心域内，该中心区域的直径为管道直径的（），其端部应对着工艺管道中介质的方向。
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You are the network administrator for The network consists of a single Active Directory domain named The network contains 40 Windows Server 2003 computers. The functional level of the domain is Windows Server 2003. Four servers are configured as domain controllers. The information technology (IT) department has positions for three trainee network administrators. When their training period is complete, the trainees move the other roles, and new trainees are appointed. The trainee administrators are responsible for backing up and restoring all servers. TestKing.com's written security policy states that each trainee must have a unique user account. The trainees' domain user accounts are members of a global group named TraineeAdmins. You need to ensure that trainees have the required rights to log on locally, to shut down, and to backup and restore all servers. When new trainees are appointed, you need to assign their user accounts the required rights. What should you do?（）
每次锅炉加药的依据是（）的大小。
《经传释词》和《词诠》的作者是谁？请简要指出这两部书的相同点和不同点。
YJ17卷烟机机械手传送装置上的抽吸槽应始终处于（），否则烟支无法正常传送。
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