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问题 选择题

下图中甲、乙所指的是国际工人运动的两个顶点，其涉及的事件分别是

[ ]

A．里昂工人起义、 * * 运动

B．《 * * 党宣言》的发表、巴黎公社

C．《 * * 党宣言》的发表、俄国二月革命

D．三大工人运动的兴起、俄国十月革命

答案

答案：B

单项选择题

(66) is a one-way function that takes an arbitrarily long piece of plaintext and from it computes a fixed-length bit string. (67) is a protocol that most USENET machines how use it to allow news articles to propagate from one machine to another over a reliable connection. (68) is an approach preferred by cable TV providers. In this solution the fiber terminates at an optoelectrical converter and the final segment is a shared coaxial cable. (69) is a device used to connect two separate network that use different communication protocol. (70) js a digital-to-digital polar encoding method in which the signal level is always either positive or negative.

A．NNI

B．NRZ

C．NAK

D．NVT
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填空题

绕包工艺的主要参数有：绕包头转速、（）和绕包节距。
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