发电机的主要参数包括哪些？（额定容量、额定功率因数、额定电压、额定氢压）
A developer wants a web application to be notified when the application is about to be shut down. Which two actions are necessary to accomplish this goal？（） ["Include a listener directive in a JSP page","configure a listener in the TLD file using the element","Include a element in the web application deployment descriptor","configure a listener in the application deployment descriptor， using the element","Include a class implementing ServletContextListener as part of the web application deploymen<\/listener><\/servlet-destroy><\/listener>"]
性心理健康的标志是什么？
实现NetBIOS名称的解析方法是（）。 ["路由服务","远程访问服务","DHCP服务","WINS服务"]
按照施工合同示范文本规定，当组成施工合同的各文件出现含糊不清或矛盾时，应按（）顺序解释。 ["A.施工合同协议书、工程量清单、中标通知书 ","B.中标通知书、投标书及附件、合同履行中的变更协议 ","C.合同履行中的洽商协议、中标通知书、工程量清单 ","D.施工合同专用条款、施工合同通用条款、中标通知书"]
网站上提供免费邮件的目的是
