3.A CPU, usually regarded as the heart of a computer, can be a microprocessor.
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国家大中型企业的总会计师由()。
A. 本单位主要行政领导人直接任免
B. 由本单位的职工民主选举产生
C. 由本单位主要行政领导人提名后再由政府主管部门任命或聘用
D. 由本单位会计人员选举产生
9.An optical computer is a computer that uses electricity i. e. electrons, to manipulate, store and
虚拟存储器是由主存和()组成。
A. 辅存
B. cache
CD-ROM
D. 内存
7.One of the drawbacks of a computer is that it cannot he used as a recreational device.