网上直接调查最常用的是（） 网上问卷。 网上实验法。 网上观察法。 公告栏法。
何谓酶定向进化？有何特点？
You are the desktop administrator for your company. Laura is a user in the company's accounting department. Laura uses a Windows XP Professional computer. Laura installs a new software application that was listed on her Add or Remove Programs list. Laura reports that the new application now opens whenever she double-clicks any file that has a .doc file name extension. She also reports that 24 new icons appear on the New menu when she right-clicks her desktop. Laura asks you to reconfigure her computer so that Microsoft Word opens when she double-clicks files that have a .doc file name extension. She also wants you to remove the new icons from the New menu. You instruct Laura to uninstall the new application. After she uninstalls the application, she reports that she can no longer open .doc files by double-clicking them. She also reports that the unwanted icons on the New menu are still present. You reinstall the new application, and it continues to open when Laura double-clicks .doc files. You want to restore the .doc file association and to remove the unwanted icons from the New menu on Laura's computer. You want to accomplish these tasks as quickly as possible. You also want to ensure that none of Laura's other documents or personal settings are affected. What should you do?（） Restore the computer to the restore point that was created when Laura installed the new application.。 Restore the System State data to Laura's computer from a backup tape. 。 Use the Windows XP Professional CD-ROM to perform an Automated System Recovery (ASR) restore. 。 Restart the computer by using the last known good configuration.&e。
张广智《西方史学史》载：“一般来说，古希腊历史和文明的领域内，并不存在什么能够有权要求管辖全希腊的和某个地区的最高政治权力”，“即使在结盟的各个城邦之间，也是始终保持各自的独立地位。”这反映出古希腊（）。 独特的自然地理环境。 人文主义使人性张扬。 平等互利的传统观念。 城邦政治体制的特点。
建立在马克思主义的原则基础上的统一包括（）。 思想统一。 行动统一。 政治统一。 组织统一。
You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5.
The application uses Session objects. You are modifying the application to run on a Web farm. You need to ensure that the application can access the Session objects from all the servers in the Web farm. You also need to ensure that when any server in the Web farm restarts or stops responding， the Session objects are not lost.
What should you do？（）
