You have an Ethernet network. Which of the conditions below can lead to increased congestion on your network?（） [" The use of Full-Duplex Mode."," The Creation on New Collision Domains."," The Creation on New Broadcast Domains."," The Addition of Hubs to the Network."," The use of switches in the Network."," The Amount of ARP or IPX SAP Traffic."]
下列桥梁类型中，属于按受力特点分类的是（） ["A、跨线桥 ","B、下承式桥 ","C、刚架桥 ","D、农用桥"]
You are configuring a Windows 2000 Professional portable computer to use a dial-up connection to connect to a routing and remote access server. The computer has a smart card reader and appropriate drivers installed. You install the MMC to request a new certificate. You install the certificate to use the smart card. You want to use your smart card for authentication when you connect to the routing and remote access server. You want to use the advanced security settings dialog box as shown in the exhibit. Which option or options should you enable in the Advanced Security Settings dialog box?（） ["Use Extensible authentication protocol （EAP） ","Unencrypted Password （PAP）","Shiva Password Authentication Protocol （SPAP）","Challenge Handshake Authentication Protocol （CHAP） ","Microsoft CHAP （MS-CHAP）","Microsoft CHAP Version 2 （MS-CHAP v2）","For MS-CHAP based protocols， automatically use my Windows logon name and password（and domain， if any）"]
机关专职党务工作人员的配备，一般占机关工作人员总数的（）。
Which three IP addresses are valid multicast addresses?（） [" 169.254.23.59"," 223.254.255.254"," 225.1.1.1"," 227.43.34.2"," 238.3.3.3"," 249.1.2.3"]
某公司以EPC方式总承包一大型机电工程，总包单位直接承担全厂机电设备采购及全厂关键设备的安装调试，将其他工程分包给具备相应资质的分包单位承担。施工过程中发生下列事件：
事件1：钢结构制作全部露天作业，任务还未完成时雨期来临，工期紧迫，不能停止施工。
事件2：储油罐露天组对焊接后，经X射线检测，发现多处焊缝存在气孔、夹渣等超标缺陷，需返工。
事件3：设备单机无负荷试运转时，发现一台大型排风机制造质量不合格。
事件4：单位工程完工后，由建设单位组织总包单位、设计单位共同进行了质量验收评定并签字。
参考样图绘制油罐焊缝出现气孔和夹渣的因果分析图（如图2-3所示）。
