题目内容
密封环的结构，密封副材料的热力性能的差异以及密封环各点温度不均，不能产生热变形。
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You are a security administrator for your company. The network consists of a single Active Directory domain. Servers run either Windows Server 2003 or Windows 2000 Server. All client computers run Windows XP Professional. The company’s written security policy states that user accounts must be locked if an unauthorized user attempts to guess the users， passwords. The current account policy locks out a user after two invalid password attempts in five minutes. The user remains locked out until the account is reset by an administrator. Users frequently call the help desk to have their account unlocked. Calls related to account lockout constitute 25 percent of help desk calls. You need to reduce the number of help desk calls related to account lockout. What should you do？（）
断路器分闸极间同期≤3ms的含义？
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