A system administrator’s daily monitoring has revealed a failing disk drive. The drive that is failing， hdisk0， is a lvm mirrored drive. What is the first step that should be taken in order to physically replace this drive？（） Remove the physical volume from the system.。 Remove the physical volume from the volume group.。 Remove the physical partitions from the volume group.。 Remove the logical volume copies from the failing drive.。
Given: What is the result?（） The code runs with no output.。 An exception is thrown at runtime.。 Compilation fails because of an error in line 20.。 Compilation fails because of an error in line 21.。 Compilation fails because of an error in line 23.。 Compilation fails because of an error in line 25.。
现浇大模板住宅工程，该工程共8层，采用框架结构，建筑面积5285m2。该工程项目周围为已建工程，因施工场地狭小，现场道路按3m考虑并兼做消防车道，距离拟建房屋4m。搅拌机棚、砂石料只能在在建工程与已建工程之间的间隙堆放。施工供电设施已按照供电设计和施工总平面图布置完毕，并且建立了临时用电安全技术方案，方案内容包括：用电组织设计的全部资料；用电工程检查验收表；接地电阻、绝缘电阻和漏电保护器漏电动作参数测定记录表；定期检（复）查表。施工现场临时用电配置，以“三级配电、末级漏保”配电保护方式。 该项目在施工过程，发生如下几项事件：
事件一：在主体结构施工至第四层时，发现部分混凝土试块强度不合格，因此，施工单位聘请了有法定资质的检测单位进行现场实体检测，检测结果实体强度能够达到设计要求。
事件二：在外用电梯上升过程中，受七层阳台伸出的一根防护栏杆影响，架子工班长让正在脚手架上进行支模的木工王某立即拆除，王某随即进行拆除作业，结果不慎将钢管坠落，击中下方正在清理模板的张某，张某因安全帽被击穿，头部严重受伤，经抢救无效死亡。
该项目现场配电方式有哪些不妥之处，请指出并说明理由。
区域开发活动环境影响识别主要采用（）等方法。 影响矩阵法。 图形重叠/GIS系统。 数值模拟法。 网络与系统流程图。 累积因子法。
During an attempt to mount filesystems on the datavg volume group, the following error message occurs: "0506-323 Cannot get information about log device loglv00." The error is due to the fact that the jfslog used by these filesystems is located on a bad disk. Which of the following procedures should be performed to fix the error?（） Run fsck on all filesystems using loglv00。 Run the logform command against loglv00。 Recreate the filesystems and resotre form a backup。 Create a enw jfslog and change /etc/filesystems to point to this log。
A system has two configured fibre channel cards, one of which, fsc0, has failed and must be replaced.
Which command should an administrator use to remove the card device and attached child devices?（）
