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一、单项选择题1．二进制数中八起第10位上的1相当于2的次方。A：9；B；10；C：11；D：8。2．微机内存容量的基本计量单位是。A：字符；B：字节；C：二进制数位；D：扇区。3．DOS暂驻区中的程序主要用于。A：执行DOS外部命令；B：读写硬盘以及显示服务；C：基本输入输出；D：执
First, a single choice 1. Binary number eight in the 10th place on the 1 corresponds to the power of two. A: 9; B; 10; C: 11; D: 8.2. Computer memory capacity of the basic unit of measurement is. A: character; B: byte; C: binary digit; D: sector. 3. The program in the DOS temporary area is mainly used. A: execute DOS external commands; B: read and write hard disk and display services; C: basic input and output; D: Executive