【单选题】The______has several major components, including the system kernel, a memory management system, the file system manager, device drivers, and the system libraries.
【单选题】There are two main methods of organizing governments—the unitary system and the federal system. The unitary state places most power in the hands of central government officials, whereas the federal st...
【单选题】The operating system has several major components,including the(64),a memory management system,the file system manager,device drivers,and the system libraries.