is permanently stored in the computer and provides a link between the hardware a
is permanently stored in the computer and provides a link between the hardware and other programs that run on the PC.
A．Interface
B．Operating system
C．Internet
D．Application software
正确答案：B解析：操作系统永久地存储在计算机中，提供了硬件与运行在PC中的其他程序的连接。
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