After installing the base operating system and the Server bundle, a system administrator d

A.The relief valves in the system should be readjusted

B.The filters and strainers should be checked frequently

C.All system pressure should be readjusted

D.The system should be drained and renewed with a fluid of different operating characteristics

A. The ORACLE_BASE base parameter is not set.

B. The installation is being performed by the root user.

C. The operating system group that is specified should have the root user as its member.

D. The operating system group that is specified must have permission to write to the inventory directory

A．behind

B．above

C．except

D．through

A．A.Router Operating Sytstem

B．B.Request of Service

C．C.React Operating System

D．D.Robot Operating System

（）is a single-user multi-task operating system .

A.MS-DOSB.WindowsC.UNIXD.Linux