单项选择题

在机房环境的设计中，按照有关国家标准，地板载重量必须大于 (11) kg/m2，表面电阻应大于 (12) 欧姆，
 

图中（11）处应为（）。

A．300
B．400
C．500
D．600

<上一题 目录 下一题>
热门 试题

单项选择题
文中（7）处应为（）。

A．软件过程
B．软件工具
C．质量保证
D．软件工程
单项选择题
{{*HTML*}}Since RAM is only active when the computer is on, your computer uses disk to store information even when the computer is off. Which of the following is true? ?(74) ?.
A．When your computer is on, only RAM is used to store information.
B．When your computer is on, only disk drives are used to store information.
C．When your computer is off, only RAM is used to store information.
D．When your computer is off, only disk drives are used to store information.
相关试题