某加工中心进行镗孔加工时，所镗出的孔与其基准的相互位置有误差，但未产生孔的形状误差，造成这种误差的原因很可能是（）。 ["机床的传动误差","机床导轨的导向误差","机床主轴的纯径向跳动","机床主轴的纯轴向窜动"]
Your network contains a single Active Directory domain named contoso.com. The functional level of the domain is Windows 2000 mixed. You have a domain controller named DC1 that runs Windows Server 2003 Service Pack 2 (SP2). DC1 hosts a standard primary zone for contoso.com. You need to ensure that only computers in the contoso.com domain can register host records in the contoso.com zone. What should you do?（） ["Convert contoso.com to a secondary zone.","Convert contoso.com to an Active Directory-integrated zone. Set dynamic updates for the zone to Secure only.","Convert contoso.com to an Active Directory-integrated zone. Set dynamic updates for the zone to Nonsecure and secure.","Change the domain functional level to Windows Server 2003. Set dynamic updates for the zone to Nonsecure and secure."]
土工布、GCL、土工复合排水网等材料的搭接应符合规范的规定。坡面上的接缝应与坡面的坡向平行。场底水平接缝距坡脚应大于（）m。 ["1","1.5","2","2.5"]
项目经理应为合同当事人所确认的人选，并在专用合同条款中明确项目经理的（）联系方式及授权范围等事项，项目经理经承包人授权后代表承包人负责履行合同 ["姓名","职称","年薪","注册执业证书编号","工程业绩"]
不属于网络协议的三要素是（）。 ["语法","时序","语义","关系"]
风电机组在投运前应具备的条件。
