单选题
如果用户网络需要划分5个子网，每个子网最多25台主机，则适用的子网掩码是（ ）。
发布日期：2022-07-20
255.255.255.192
255.255.255.248
255.255.255.240
255.255.255.224
试题解析
子网
对于一般由路由器和主机组成的互连系统，我们可以使用下列方法定义系统中的子网。为了确定网络区域，分开主机和路由器的每个接口，从而产生了若干个分离的网络岛，接口端连接了这些独立网络的端点。这些独立的网络岛叫做子网(subnet)。IP地址是以网络号和主机号来表示网络上的主机的，只有在一个网络号下的计算机之间才能“直接”互通，不同网络号的计算机要通过网关（Gateway）才能互通。但这样的划分在某些情况下显得并不十分灵活。为此IP网络还允许划分成更小的网络，称为子网（Subnet）。
- 中文名
- 子网
- 类别
- 计算机
- 性质
- 科学
- 属于
- 网络
台主
❶指御史中丞。《晋书·职官志》:西汉哀帝时“中丞出外为御史台主。历汉东京至晋因其制,以中丞为台主。”❷指尚书令、仆射。《南齐书·百官志》:“尚书令,总领尚书台二十曹,为内台主。”“无令,左仆射为台主。”
网络
《网络》是罗大佑演唱的歌曲，收录于专辑《美丽岛》中。
- 中文名
- 网络
- 歌曲原唱
- 罗大佑
- 所属专辑
- 美丽岛
- 歌曲语言
- 国语
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此试题出现在
CRH1A型动车组网络控制传输系统中，（）连接器用于连接光纤。
可以把称重传感器的底面置于可滚动的轴承球上，让传感器能自由滑动，使传感器更加准确地传力，提高准确度。
希腊化文明的历史影响
下述何方为治疗痞满痰湿中阻证的首选方？（ ）
When a human infant is born into any community in any part ofthe world it has two things in common with any infant, provided 1．______neither of them have been damaged in any way either before or 2．______during birth. Firstly, and most obviously, new born children arecompletely helpless. Apart from a powerful capacity to pay attention to 3．______their helplessness by using sound, there is nothing the new bornchild can do to ensure his own survival. Without care from someother human being or beings, be it mother, grandmother, or humangroup, a child is very unlikely to survive. This helplessness of humaninfants is in marked contrast with the capacity of many newborn animals to get on their feet within minutes of birth and run 4．______with the herd within a few hours. Although young animals are certainly in risk, sometimes for 5．______weeks or even months after birth, compared with the human infantthey very quickly develop the capacity to fend for them. 6．______It is during this very long period in which the human infant istotally dependent on the others that it reveals the second feature 7．______which it shares with all other undamaged human infants,a capacity to learn language. For this reason, biologists now suggest thatlanguage be ‘species specific’ to the human race, that is to say, they 8．______consider the human infant to be genetic programmed in 9．______such a way that it can acquire language. This suggestion implies that 10．______just as human beings are designed to see three-dimensionally and in color, and justas they are designed to stand upright rather than tomove on all fours, so they are designed to learn and use language aspart of their normal development as.
尽管白天阳光有时不能照到房间里，但房间仍然很亮，其主要原因是（ ）。
表格中需要计算只能在Excel环境中进行，Word环境中无法实现表格数据计算。
文理解释
零件测绘的一般过程是什么？
设计采暖系统时，系统的最高点应设（），最低点应设（）。
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