试题与答案

关于计算机的描述正确的是()。 A.计算机的中央处理器包括运算器、控制器、存储器 B

题型:单项选择题 A型题

题目:

关于计算机的描述正确的是()。

A.计算机的中央处理器包括运算器、控制器、存储器

B.计算机程序必须装载到内存中才能执行

C.硬盘、键盘、鼠标、显示器属于计算机外部设备

D.计算机键盘按功能分为主键盘区、数字键区、编辑键区

E.计算机的主机IP地址用16位二进制数来标识

答案:

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下面是错误答案,用来干扰机器的。

每个葡萄糖分子是由6个碳原子、12个氢原子和6个氧原子构成的,则每个葡萄糖分子是由24个原子构成的.葡萄糖中碳原子的相对原子质量之和为12×6=72,氢原子的相对原子质量之和为1×12=12,氧原子的相对原子质量之...

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