筒车在中国古代南方农业生产中发挥过重要作用，这一灌溉工具创制于（）。 ["三国","南北朝","唐代","南宋"]
You backed up the database at 8 a.m. today using an online backup. Accounting made a large change to the underlying data between 10 a.m. and noon. Which of the following actions would ensure that the changes could be recovered using the 8 a.m. backup？（） [" Create a manual incremental online database backup."," Back up all the archived redo logs generated since the 8 a.m. backup."," Create a brand-new backup after all the changes have been applied."," There is no way to make the changes recoverable based on the 8 a.m. backup."," Perform an online backup of the tablespace（s） that contained changed data."]
管道法兰连接，应检测法兰间的电阻值小于（）Ω。 ["0.05","0.04","0.03","0.01"]
碱度可分为（） ["甲基橙碱度和酚酞碱度","甲基橙碱度和全碱度","酚酞碱度和小碱度"]
View the Exhibit. You are creating an additional database by using the Database Configuration Assistant（DBCA）. You opted to create a General Purpose database and during the database creation realize that theBlock Size field is not enabled. What could be the reason for this（） ["You have chosen the File System option as the storage option.","You have chosen the Automatic Storage Management （ASM） as the storage option.","The data block size can be increased only when DBCA is invoked from Oracle Universal Installer （OUI）.","You are using General Purpose template and not the Custom Database template to create the database"]
土壤母质
