皮皮学，免费搜题
登录
搜题
【单选题】
在使用小键盘区盲打输入数字时,小键盘区的定位键是( )A.
0
B.
+
C.
8
D.
5
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】下列关于计算机软硬件系统描述，其中错误的是( )
A.
操作系统是计算机软硬件层次的分界面
B.
计算机系统主要由软件和硬件构成，两者互为依托和补充
C.
指令系统是计算机软硬件层次的分界面
D.
计算机的软硬件功能是逻辑等价的，因此某些软硬件模块可以固化或者软化
【单选题】下列关于NetWare容错技术的描述，错误的是( )。
A.
系统容错技术主要有三级容错机制、事务跟踪系统与UPS监控
B.
第三级容错提供了文件服务器镜像功能
C.
NetWare的三级容错机制是区别于其他网络操作系统的重要特征
D.
UPS监控用来防止在写数据库的过程中因系统故障而造成的数据丢失的情况
【判断题】Whether an oligopoly consists of 3 firms or 10 firms, the level of output likely will be the same.()
A.
正确
B.
错误
【单选题】下列关于计算机软硬件系统描述,错误的是( )。
A.
操作系统是计算机软硬件层次的分界面;
B.
计算机系统主要由软件和硬件构成,两者互为依托;
C.
指令系统是计算机软硬件层次的分界面;
D.
计算机的软硬件功能是逻辑等价的,因此某些软硬件模块可以固化或者软化;
【单选题】Which of the following is characteristic of oligopoly firms, but not of monopolistically competitive firms?
A.
firms seek to maximize profits
B.
firms face downward-sloping demand curves
C.
the pricing behavior of one firm has a significant effect on the sales of other firms
D.
firms have at least some ability to influence price
【单选题】One difference between oligopoly firms and firms that are monopolistic competitors is that:
A.
the average total cost curves of monopolistic competitors are generally u-shaped, but for oligopoly firms they are not.
B.
monopolistic competitors choose a level of output such that marginal revenue equals marginal cost, but oligopoly firms generally do not.
C.
monopolistic competitors face lower costs on average than do oligopoly firms.
D.
the interdependence among firms is highly significant in oligopoly markets, but not in monopolistically competitive markets.
相关题目：