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多项选择题 10. abstract public class Employee {  11. protected abstract double getSalesAmount();  12. public double getCommision() {  13. return getSalesAmount() * 0.15;  14. }  15. }  16. class Sales extends Employee {  17. // insert method here  18. }  Which two methods, inserted independently at line 17, correctly complete the Sales class?()

A、 double getSalesAmount() { return 1230.45; }

B、 public double getSalesAmount() { return 1230.45; }

C、 private double getSalesAmount() { return 1230.45; }

D、 protected double getSalesAmount() { return 1230.45; }

  • B,D
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