在加入每种药物后,操作者应检查液体,出现沉淀、浑浊、变色、分层、结晶、异物时不能使用。
参考答案:对
()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
系属