39. The example of the unions in Wisconsin shows that unions
A. [A]often run against the current political system.
B. [B]can change people’s political attitudes.
C. [C]may be a barrier to public-sector reforms.
D. [D]are dominant in the government.
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40. John Donahue’s attitude towards the public-sector system is one of
A. [A]disapproval.
B. [B]appreciation.
C. [C]tolerance.
D. [D]indifference.
三种映射方式中,直接映射方式最不灵活。
A. 对
B. 错
三种映射方式中,全相联映射方式电路结构最复杂,成本最高。
A. 对
B. 错
由于Cache的容量比较小,不可能存放主存的所有数据,能否实现CPU在一定时间内只访问Cache?为什么?