2. 计算机
  3. Applications put computers to practical business(67), but below the(68)it’s the heart of an operating system-the kernel-that pro

Applications put computers to practical business(67), but below the(68)it’s the heart of an operating system-the kernel-that pro

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问题 Applications put computers to practical business(67), but below the(68)it’s the heart of an operating system-the kernel-that provides the technical wizardry to juggle multiple program, connect to networks and store(69).
   A traditional kernel provides all the functions for applications. The kernel(70)memory, I/0 devices and parcels out processor time.
   The kernel also supports security and fault(71), which is the ability to recover automatically when parts of the system fail.
选项 A、used
B、use
C、apply
D、applied
答案B
解析 计算机被应用到实际的商业用途中，但在它的内部是一个操作系统的核心，它提供了多重程序技术，并且连接网络，储存数据。
   一个传统的核心提供应用程序的所有功能，它处理记忆功能，输入/输出设备，并分配处理器的时间。
   这个核心支持安全和容错能力，当系统部分失灵时能够自动恢复。
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