单选题 The ______ has several major components, including the system kemel, a memory management system, the file system manager, device drivers, and the system libraries.
【正确答案】 C
【答案解析】[解析] 操作系统包含以下主要部件：系统内核、内存管理系统、文件管理系统、设备驱动程序和系统库。