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A web application uses the HttpSession mechanism to determine if a user is "logged in." When a usersupplies a valid user name and password， an HttpSession is created for that user. The user has access tothe application for only 15 minutes after logging in. The code must determine how long the user has beenlogged in， and if this time is greater than 15 minutes， must destroy the HttpSession. Which method in HttpSession is used to accomplish this？（）
You work as an administrator at ABC.com. The ABC.com network consists of two Active Directory forests， named ABC.com and test.com. There is no trust relationship configured between the forests.A backup of Group Policy object （GPO） from the test.com domain is stored on a domain controller in the ABC.com domain. You are informed that a GPO must be created in the ABC.com domain， and must be based on the settings of the GPO in the test.com domain. You start by creating the new GPO using the New-GPO Windows PowerShell cmdlet.You want to complete the task via a Windows PowerShell cmdlet. Which of the following actions should you take？（）
当缺水地区发生火灾时，第一出动力量应尽量多调集（ ）消防车。
服务礼仪要求服务人员从哪四个方面进行修饰？
在对话框构件中，退出按扭OK对应的关键字为（）。
08-32捣固车捣固装置的下插深度是如何规定的？
动态试验：机车向前走行经过点式信号时，LKJ窗口限速应变为15Km/h，同时土挡接线盒“向前”指示灯应长亮，“（）”“输出”指示灯应瞬间点亮。
淘金币活动报名商品必须为一口价，活动价格低于等于最近30天最低成交价格，商品不得有区间价格。（）
下列情况中，常见于典型的偏头痛的是（）
口腔黏膜白斑临床上可有下述表现（）
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