题目:
As an operating system repeatedly allocates and frees storage space, many physically separated unused areas appear. This phenomenon is called().
A.fragmentation
B.compaction
C.swapping
D.paging
答案:
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参考答案:D解析:记账凭证应符合下列要求:①应对记账凭证进行连续编号;②记账凭证根据每一张原始凭证或若干张同类原始凭证汇总填制;③记账凭证必须附原始凭证(结账和更正的例外),并注明张数;④与其他单位核...