有定义public Manager extends Employee和public float find Ta...
多项选择题有定义public Manager extends Employee和public float find Tax Rate(Employee e)定义如下的对象Manager m=new Manger();Employee e=new Employee();那么下列语句一定正确的是()
A、find Tax Rate(m)
B、find Tax Rate(e)
C、find Tax Rate(m,e)
D、find Tax Rate()