锅炉水处理人员须经过培训、考核合格，并取得安全监察机构颁发的（）后，才能从事相应的水处理工作。 ["结业证书","等级证书","合格证书","相应作业人员资格证书"]
You are the domain administrator for your company's Active Directory domain. All servers run Windows Server 2003. The information technology (IT) department recently installed Windows Server Update Services (WSUS) to manage security updates. The server that runs WSUS is configured to automatically approve critical and security updates, and to synchronize automatically every day at 7:00 A.M. New critical security updates were released today at 9:00 A.M. You need to manually update the WSUS server and make the updates available to client computers. What should you do? （） [" Log on to the WSUS server. Download and install the new security updates from Microsoft Update."," Download the new security updates from Microsoft Update to your local computer. Copy and paste the update files to the WSUSContent folder on the WSUS server."," Connect to the WSUS server home page. Click the Synchronize Now link."," Log on to the WSUS server. From the command line, run gpupdate \/force."]
某物资采购合同，因当事人订立合同时的疏漏，未明确约定交货地点。按照《合同法》的规定，弥补该欠缺条款方式的先后次序应为（） ["按《合同法》规定的处理原则执行——双方协商约定——按交易习惯确定","按交易习惯确定——按《合同法》规定的处理原则执行——双方协商约定","双方协商约定——按《合同法》规定的处理原则执行——按交易习惯确定","双方协商约定——按交易习惯确定——按《合同法》规定的处理原则执行"]
为什么说安全系统具有典型的灰色特征？
BOT模式运作中，关于转让，以下说法不正确的是（） ["在建设期内，经招商人口头同意后，项目公司的股权就可以变更","在建设期内，经招商人书面同意后，项目公司的股权才可以变更","新股东的资产状况、信用等资格条件不得低于原股东","股权变更，项目公司应及时向市政公用事业行政主管部门备案"]
发电机氢气系统的故障种类？
