在OSI参考模型的层次中，数据链路层的数据传送单位是（） - 查题网

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高等继续教育 / 实用组网技术

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题型描述: 单选题
在OSI参考模型的层次中，数据链路层的数据传送单位是（）
A.报文
B.帧
C.位
D.分组

积分

实用组网技术

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佳题速递：

5[翻译题] Tom is a biologist（生物学家）. when he started working in a chemical factory, he thought he was protecting his children. he wanted to offer the best things in their life, such as a big house, a boat and wonderful vocation. I think he must love his family very much, and did a lot for it. even in the most difficult time, he never give up his family and children. this kind of person is no doubt admired by others. he loved chemistry(化学) and lost a lot of things because of it. but he never gives up, and always work hard . It gives me a deep impressing that when he knew the four little leopard （豹）were dead of environment pollution, he believed that chemistry can bring benefit to the humans英语

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1[单选题] 以下问题中，哪个不是宏观经济学所考察的问题 A.失业率的上升或下降 B.通货膨胀的原因 C.政府对企业征收庇古税 D.价格变动对一国均衡国民收入的影响河南理工大学

下列交易或者事项中，应填制付款凭证的有（）。基础会计学（函授）

电子商务英语

报表处理子系统中，报表运算公式基本构成包括（）。电算化会计