单项选择题

The Unified Modeling Language is a standard graphical language for modeling object-oriented software-（）can show the behavior of systems in terms of how objects interact with each other.

A.Class diagram
B.Component diagram
C.Sequence diagram
D.Use case diagram

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单项选择题

（）is a property of object-oriented software by which an abstract operation may be performed in different ways in different classes.

A.Method
B.Polymorphism
C.Inheritance
D.Encapsulation

单项选择题

The strategies for handling risk comprise of two main types:negative risks,and positive risks.The goal of the plan is to minimize threats and maximize opportunities.When dealing with negative risks,there are three main response strategies-（），Transfer,Mitigate.

A.Challenge
B.Exploit
C.Avoid
D.Enhance

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