搜题请搜索小程序“爱下问搜题”
问题 选择题

明清是我国封建社会的衰落时期，主要表现在

①手工业出现了资本主义萌芽 ②封建专制空前强化 ③对外实行闭关政策 ④反君主专制的民主思想产生

A．①②③

B．②③④

C．①②④

D．①②③④

答案

答案：D

本题主要考查分析认识历史现象及本质的能力，考查要点是明清封建主义衰落的表现。依据政治、经济、思想、对外政策的内容分析，比较容易作出判断。

单项选择题

(71) is a one -way function that takes an arbitrarily long piece of plaintext and from it computes a fixed-length bit string.
(72) is a protocol that most USENET machines now use it to allow news articles to propagate from one machine to another over a reliable connection.
(73) 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.
(74) is a device used to connect two separate network that use different communication protocol.
(75) is a digital-to-digital polar encoding method in which the signal level is always either positive or negative.

A．MD

B．RSA

C．DES

D．MIB
查看答案
单项选择题

进行假设检验时，在其它条件不变的情况下，增加样本量，检验结论犯两类错误的概率会（）。

A、都减少

B、都增大

C、都不变

D、一个增大一个减小
查看答案