设持排序关键码序列为(25，18，9，33，67，82，53，95，12，70)，要按关键码值递增的顺序排序，采取以第一个关键码为分界元素的快速排序法，第一趟排序完成后关键码33被放到了第几个位置?(48)。

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Viruses can't be transmitted by(74)and(75)is not a common route for virus infiltration.

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Software refers to(70). The most important software on any computer is(71).

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CPU doesn't mean(68). On a large computer system, a(69)links external devices to a channel.

Modern computers are electronic and(66)devices. The basic building block of a modem computer is a(67).

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