题目内容
网络地址192.168.0.0,其子网掩码是255.255.255.224,则此网络被划分了几个子网()。
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有一个网络地址为192.1.3.0/24,要在此网络中划分12个子网,问:(1)需要多少位表示子网?(2)子网掩码的点分十进制数值是多少?(3)每个子网地址是什么?(4)每个子网能容纳多少主机?(5)整个网络能容纳多少主机?(6)第2个子网的广播地址是多少?
Cloze: Complete the passage with the appropriate words or expressions in the box. Change the form when necessary. opponentintellectualput ... to the testartificial.tackleconstructcrackadjusttournament acceleratebreakthroughget the better of Those who champion the cause of __1__ intelligence are celebrating a(n) __2__. For computer scientists have managed to __3__ the problem of how to __4__ a computer that can play the ancient game of Go better than humans. In __5__ with grand masters the computer has __6__ them, defeating one __7__ after another. Some welcome the greater power of computers, arguing they will be willing slaves in helping us __8__ our problems. Others, like the great scientist Stephen Hawking, fear computers may eventually become independent of us and bring the reign of human beings to an end.
科学研究就是运用科学方法产生新知识的具有创造性或创新性的活动。（ ）
利用网页问卷、电子邮件问卷、网上聊天室、电子公告等网络多媒体通讯手段来收集调查数据和访谈资料的调查方法称为（ ）
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