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作为上行文时，下级回答上级机关的询问函或征求意见函时，一般采用复函。
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两个公司希望通过Internet 进行安全通信，保证从信息源到目的地之间的数据传输以密文形式出现，而且公司不希望由于在中间节点使用特殊的安全单元而增加开支，最合适的加密方式是（10） ，使用的会话密钥算法应该是 （11） 。 （11）处填（）。
已知3 个类O、P 和Q，类O 中定义了一个私有方法F1 和一个公有方法F2；类P 中定义了一个公有方法F3，类P 为类O 的派生类；类Q 为类P 的派生类，它们的继承方式如下所示： class P : public O {…}; class Q : private P {…}; 在关于类P 的描述中正确的是 （43） ；在关于类Q 的描述中正确的是 （44） 。 （44）处填（）。
People are indulging in an illusion whenever they find themselves explaining at a cocktail(鸡尾酒) party, say, that they are "in computers," or "in telecommunications," or "in electronic funds transfer". The implication is that they are part of the high-tech world. Just between us, they usually aren’t. The researchers who made fundamental breakthroughs in those areas are in a high-tech business. The rest of us are（）of their work. We use computers and other new technology components to develop our products or to organize our affairs. Because we go about this work in teams and projects and other tightly knit working groups(紧密联系在一起的工作小组), we are mostly in the human communication business. Our successes stem from good human interactions by all participants in the effort, and our failures stem from poor human interactions. The main reason we tend to focus on the（）rather than the human side of the work is not because it’s more（）, but because it’s easier to do. Getting the new disk drive installed is positively trivial compared to figuring out why Horace is in a blue funk(恐惧) or why Susan is dissatisfied with the company after only a few months. Human interactions are complicated and never very crisp(干脆的,干净利落的) and clean in their effects, but they matter more than any other aspect of the work. If you find yourself concentrating on the（）rather than the（）, you’re like the vaudeville character(杂耍人物) who loses his keys on a dark street and looks for them on the adjacent street because, as he explains, "The light is better there!". The main reason we tend to focus on the（）
操作数所处的位置，可以决定指令的寻址方式。操作数包含在指令中，寻址方式为（4） ；操作数在寄存器中，寻址方式为（5） ；操作数的地址在寄存器中，寻址方式为（6） 。 （6）处填（）。
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