请问用DDA方法计算像素位置有什么优点与缺点?
通信机房基础结构内金属构件的连接应采用土建施工的绑扎法连接或焊接,金属构件之间不必做电气连通。
A、对
B、错
用汇流排把基础电源馈送到机房机架,这种方式称为汇流式供电,又称高阻配电。
A、对
B、错
450MHZz的无线电波主要的属于()波。
You are an Oracle DBA responsible for an ASM instance. The disk controller on your system fails. You suspect that the disk itself is okay. You know it will take 24 hours to replace the controller and you don’t want to have to rebuild the disks from scratch. What do you do?()
A、 Take the whole disk group offline and wait for the controller card to be installed. Once it’s installed,bring the disk group online again.
B、 Change the ASM parameter ASM_PREFERRED_READ_FAILURE_GROUPS to indicate that you want to read from the non-failed disk. Once the disk controller is replaced,reset the parameter to its original value.
C、 You have no choice but to rebuild the disk. Drop the disk from the disk group and wait for the controller to be replaced. Once the controller is replaced, add the disk back into the disk group and allow ASM to rebuild it.
D、 If you are using any setting other than REDUNDANCY EXTERNAL for your disk group,you will have to recover any data on that disk from a backup. The database will be unavailable until you can correct the problem and perform recovery.
E、 Change the attribute DISK_REPAIR_TIME on the disk group to a time greater than 24 hours.
在施工过程中发现设计、配套或业主等存在急需协调解决的问题时,应在第一时间汇报至()。
A、公司领导
B、建设单位
C、监理单位
D、施工单位