尾矿库安全度分类，主要根据尾矿库的（）和尾矿矾体的稳定性确定。安全度分为危库、险库、病库和正常库。 ["抗灾能力","抗震能力","防洪能力","抗爆能力"]
IP地址66.168.21.121是（） ["A类","B类","C类","D类"]
You work as an application developer at Certkiller .com. You have recently created a Windows service application and need to define a Windows service class. What should you do？（） ["A","B","C","D"]
Your company uses Network Access Protection （NAP） to enforce policies on client computers that connect to the network.Client computers run Windows Vista. A Group Policy is used to configure client computers to obtain updates from Windows Server Update Services （WSUS）.Company policy requires that updates labeled Important and Critical must be applied before client computers can access network resources. You need to ensure that client computers meet the company policy requirement. What should you do？（） ["Enable automatic updates on each client.","Enable the Security Center on each client.","Quarantine clients that do not have all available security updates installed.","Disconnect the connection until the required updates are installed."]
预制外挂墙板安装尺寸，每块外墙板垂直度允许偏差为（）。 ["A.1mm ","B.2mm ","C.3mm ","D.4mm"]
根据《工伤保险条例》规定，职工因工死亡，其一次性工亡补助金标准是多少？
