身份认证的功能有可信性、完整性、访问控制和()四大功能。

According to the text, mathematicians present a risk to scientists for which of the following reasons?A．Mathematicians may provide theories that are incompatible with those already developed by scientists.B．Mathematicians may define situations in a way that is incomprehensible to scientists.C．Mathematicians may convince scientists that theoretical assumptions are facts.D．Scientists may come to believe that axiomatic statements are untrue.此题为多项选择题。 点击查看答案

按时间顺序记载一定范围内发生的重大事件的课程复习资料叫做()。

A.时事
B.年鉴
C.大事记
D.专题概要

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