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写出下列程序的时间复杂度 for(i=0; i<n; i ) for (j=0; j<m; j ) A[i][j]=0;
某双面磁盘,每面有220道,已知磁盘转速r=3000转/分,数据传输率为175000B/s,问磁盘总容量是多少?
旅游者的心理活动过程包括:( )
判断方程式Mn2(CO)10 Cl2=2Mn(CO)5Cl是否正确。
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通过硬件和软件的功能扩充,把原来独立的设备改造成能为若干用户共享的设备,这种设备称为()。
强酸滴定弱碱应选用的指示剂是
用NaOH滴定HAc,以酚酞指示剂滴到pH=9,会引起
五.分光光度法选择参比溶液的原则和方法是什么?
传输层的作用是向源主机与目的主机进程之间提供_____数据传输。
A computer system includes a computer, peripheral devices, and software. The electric, electronic, and mechanical devices used for processing data are referred to as hardware. In addition to the computer itself, the term “hardware” refers to components called peripheral devices that expand the computer’s input, output, and storage capabilities. Computer hardware in and of itself does not provide a particularly useful mind tool. To be useful, a computer requires a set of instructions, called software or a computer program, which tells the computer how to perform a particular task. Computers become even more effective when connected to other computers in a network so users can share information.
提出动机性遗忘理论的心理学家()
联结论的主要特征是()
衡量一个化学测验水平高低的四个维度不包括信度。
缝夫琅和费衍射实验中,当把单缝S稍微上移时,衍射的图样将
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