软件调试的主要方法是什么？
Your network consists of a single Active Directory domain. All servers run Windows Server 2008 R2. You plan to publish a Web site on two Web servers. You need to deploy an availability solution for your Web servers that meets the following requirements： èSupports the addition of more Web servers without interrupting client connections èEnsures that the Web site is accessible even if a single server fails What should you do？（） ["Configure a failover cluster.","Configure a Web garden on each Web server.","Create a Network Load Balancing cluster.","Create two application pools on each Web server."]
砖石工程进行冬期施工的温度界定是（）。 ["A.连续10天平均气温低于-3℃ ","B.当日最低气温为0℃ ","C.连续10天平均气温低于5℃ ","D.当日最低气温为-5℃"]
热带辐合带
试述点火提前角对汽油机燃烧的影响？
生态因子作用作用特征包括（）、（）、（）、（）、（）。
