清河泵站设计装机流量150m3/s，出口防洪闸所处堤防为1级。招标人对出口防洪闸工程施工标进行公开招标。有关招标工作计划如下：5月31日提交招标备案报告，6月1日发布招标公告，6月11日～15日出售招标文件，6月16日组织现场踏勘，6月17日组织投标预备会，7月5日开标，7月6日～10日评标定标。招标工作完成后，A单位中标，与发包人签订了施工承包合同。工程实施中发生如下事件：
事件1：Ⅰ-Ⅰ段挡土墙（示意图如下图所示）开挖设计边坡1：1，由于不可避免的超挖，实际开挖边坡为1：1.15。A单位申报的结算工程为50m×（S1+S2+S3），监理单位不同意。
事件2：原定料场土料含水量不能满足要求，监理单位指示A单位改变了挡土墙墙后填土料场，运距由1km增加到1.5km，填筑单价直接费相应增加2元/m3，A单位提出费用变更申请。
料场变更后，A单位的费用变更申请能否批准？说明理由。若其他直接费费率取2%，现场经费费率取4%，根据水利工程概（估）算编制有关规定，计算填筑单价直接费增加后相应的其他直接费、现场经费、直接工程费。
Every Sunday， consistent backups are performed on your database. Because of a user error， you performed an incomplete recovery on Tuesday and opened the database with the RESETLOGS option. A user error occurs again on Thursday， which necessitates an incomplete recovery. Sunday’s backup is the most recent backup available. What would you do in this scenario？（） recovery cannot be performed because a backup was not performed after the last incomplete recovery。 restore all the files from Sunday’s backup， and then perform an incomplete recovery up to the point in time when the user error occurred on Thursday。 restore all the files from Sunday’s backup， and then recover up to the point in time when the RESETLOGS operation was performed on Tuesday。 restore all the files from Sunday’s backup， and open the database to reset the database to the point in time when the backup was performed on Sunday。
A system administrator has a two-disk volume group （testvg） with one logical volume （testlv） which has just been mirrored across both disk drives. Which of the following commands can be used to turn off quorum？（） chvg -Qn testvg。 chlv -Qn testlv。 varyoffvg testvg； varyonvg -Qn testvg。 varyoffvg testvg； exportvg testvg； importvg -Qn testvg； varyonvg testvg。
在制作某些板料制件时，必须先要按图样在板料上画展开图形，才能进行落料和成形。
A system administrator issued the errpt command and had no results. The system administrator determined that error logging was turned off. Which of the following commands should be used to start logging system errors？（） /usr/bin/errmsg。 /usr/lib/errdemon。 /usr/lib/errlogger。 /usr/bin/errinstall。
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？（）
