simply
问题A requirement is simply a statement of what the system must do or what characteristics it
Arequirementissimplyastatementofwhatthesystemmustdoorwhatcharacteristicsitneedstohave.Re
问题Stated more formally, an object is simply（）of a class.A.a part B.a component C.an instanc
Statedmoreformally,anobjectissimply（）ofaclass.A.apartB.acomponentC.aninstanceD.anexample