与其他运输方式比较，管道运输具有的技术经济特征是（） 运输成本低。 运输距离短。 灵活、适应性强。 输送能力大、连续性强。
自我效能
危险性较大的分部分项工程是指建筑工程在施工过程中存在的、可能导致作业人员（）或造成重大不良社会影响的分部分项工程。 轻伤。 重伤。 死亡。 群死群伤。
This question is the first in a series of questions that all present the same scenario. For your convenience, the scenario is repeated in each question. Each question presents a different goal and answer choices, but the text of the scenario is exactly the same in each question in this series. Start of repeated scenarioYou are an enterprise desktop support technician for Fabrikam, Inc. Active Directory InformationThe company has a main office and a branch office. The main office hosts all of the companys servers. The main office connects to the branch office by using a WAN link. The network contains a single Active Directory domain that has 500 users. The domain contains three domain controllers and an enterprise root certification authority (CA). All servers run Windows Server 2008 R2. All user accounts are in an organizational unit (OU) named Employees. The computer accounts for all desktop computers are in an OU named Desktops. The computer accounts for all portable computers are in an OU named Laptops. A startup script is deployed to all computers by using Group Policy objects (GPOs). Client ConfigurationsAll client computers run Windows 7 Enterprise. All users have desktop computers. All computers are members of the domain. All desktop computers use wired connections to connect to the network. All portable computers use wireless connections to connect to the network. The wireless network is secured by using EAP-TLS. Company policy states that all client computers must be configured by using DHCP. The company has an internal Web site. The Web site is configured to use SSL encryption and to require client certificates. All company users can access the internal Web site. End of repeated scenario The company hires a new desktop support technician. The technician is added to the Administrators group on all client computers and the DHCP Users group on all DHCP servers. The new technician reports that the DHCP snap-in is unavailable on his computer. You need to ensure that the technician can view the configurations of the DHCP servers. What should you do?（） Instruct the technician to customize the Start menu to display the administrative tools.。 Instruct the technician to install Remote Server Administration Tools (RSAT) and to modify the Windows Features.。 Request that the technician be added to the Server Operators group in Active Directory.。 Request that the technician be added to the Network Configuration Operators group in Active Directory and modify the Windows Features.。
主干直立的造型是（）。 （半）球形。 S形。 新月形。 L形。
两个相邻节点之间最多可以有（）条箭头线。
