当计算机无法正常使用系统内的设备时,系统内一定存在病毒。( )
参考答案:错
解析: 计算机系统的硬盘分区混乱,设备驱动的缺失或者路径设置有误也会导致计算机无法正常使用系统内的设备
Fair and(1)competition in government procurement around the world is good business and good public policy. Competitive pricing, product (2)and performance improvements result from competitive practices and help ensure that government authorities get the best (3)for the public they serve.
3.见题干()
A. help
B. server
C. value
D. policy
简述“过早搏动”的概念。